Then the former articles,, we went on to say how to choose a KVM solution for the remaining number of factors
6, connection: the server to the KVM device to see what the cable connection, it is better to connect using CAT5, simple appearance. Connections can also be extended for KVM equipment and devices cascaded KVM, but Cascade will be affected after the general management of the flexibility and convenience, but also some Cascade KVM equipment beyond a one-stop management, and not only This cascade of KVM equipment manufacturers as well as the standard cascade other KVM equipment manufacturers, and can facilitate the management server by clicking on the current AVOCENT is fully capable of meeting this connection, the biggest advantage is cost savings.
Also from the KVM device to the control terminal, in what manner? The difference between analog and digital is that analog is the use of end-to-end connectivity, and digital KVM network is using to complete.
Connect program in your choice of an important and decisive.
7, management features: The rich management features, can be divided into basic, button switch, hot key switching, switching menu, click the selection, but also a number of administrators and the general device user account to achieve the use of specialized equipment and personnel, in person.
8, the video quality: whether it is analog or digital equipment, the KVM, KVM signals as a result of the extension of the distance, there is video quality and the keyboard, mouse, moving the issue of delay, the general analog KVM devices show better video quality, and the number of will be less, in the field of digital KVM TRUECOLOR can only AVOCENT companies, because of their differences on the use of video transmission, so there is minimum bandwidth, the smallest sense of the characteristics of hysteresis.
9, product maturity: For enterprises, the products of greatest concern to the maturity, the general selection of more than three years of market-proven products, and will not choose which products are still perfect.
10, nature: Select advanced KVM manufacturers of KVM system so that you can not easily be the most out of your use of the KVM system longer, what is the most advanced KVM then, with the exception of the above can be introduced to meet, but also VM do not support the function, and IPMI management functions, such as support for audio.
All in all, the analog or digital solution is not good or bad, depends on demand and cost-effective, but the number of open IP-based KVM solution standards, with more vitality and adaptation to nature. Particular industry or show on the video quality requirements of the enterprise except for the higher. Users from the area could be considered cost-effective analog KVM switches cascade analog or digital KVM switch options.
Introduced through the above-mentioned combination of the outcome of the consultation you can find the best suited to your control room to focus KVM solutions
Tuesday, June 30, 2009
How to choose a KVM solution (1)
Based on years of experience in the implementation of each business to choose the same KVM solution, mainly due to: 1, KVM's rapid development of options you can have analog, digital, and digital-analog combined with the program; 2, KVM System management feature-rich, whether it is analog or digital KVM systems have the management capabilities and rich connections, which can be reflected in your management needs and cost-effective on the KVM system, so what kind of KVM solutions is your best choice, the general need to consider the following factors:
1, the number of servers: the number of servers involved in this issue and its expansion to the KVM system configuration or connection, which involves the management and cost-effective, especially when the number of larger, often demand more complex, more flexible solutions.
2, the administrator and the number of users: the use of KVM centralized management because it is after, it involves the use of the number of users, to be able to meet the users to control servers within their competence, not the same as the business administrator or the specific user is also relatively large differences in the flexibility to solve the problem, the general increase in cost can be.
3, visit the channel number: blocking rate, that is, multiple users at the same time the use of KVM system obstruction caused by later users can not visit the KVM device, so visit the channel by the combination of administrator and end users to determine the number of management, based on enterprises to identify the specific circumstances of a number of best management terminal by the management terminal to determine the number of KVM equipment.
4, the security issues: speaking from the transmission, digital signal than analog KVM, because the analog signal transmission products are keyboard, mouse, display digital signal, the network was easy to steal, a lot of security risks and how encryption of these signals is critical, the number currently on the market the way KMV encryption: SSL, DES, 3DES, some encryption method such as the existence of security risks 128SSL, so before buying equipment KVM must understand clearly. Transmission security is not only manifested in the encryption method, the most advanced equipment used KVM Video incremental transmission mechanism, only changes in the video transmission of the signal from a security sense, even if it can not be stolen, a strong guarantee of the safety data .
The safety of not only the security of output data, as well as user account security issues, as the KVM is based on the IP network is an open system, so user accounts are also people with ulterior motives have been hacking through a variety of network monitoring tools or the possibility of theft, the current user authentication 128SSL protocol is commonly used, but the authentication system can support the KVM industry-standard X.509 certificates and AAPI / SSPI agreement is a measure of the highest standards of safety certification. In addition the system depends on the concentration of KVM management system hot backup capabilities, and how easy to maintain, in particular, whether the user self-maintenance is very important.
In addition to transport security issues, with the high-end KVM, since the conversion is the use of specialized interface with the server connection, so there is not a conversion interface is activated to send KVM signals and storage of information such as permissions as a standard to measure the system security.
5, management: the way into analog and digital management, and the figures can be divided into special software or browser access, centralized management system is currently available in the market are software and hardware, as well as certification of non-systematic direct access to KVM devices, the existence of security risks, and so on, so what kind of management style suited to your needs carefully before buying a variety of ways to understand the benefits or drawbacks. In general the use of centralized management software, more because of its ability to heat back up and encryption is strong and easy to maintain, so a relatively high security.
1, the number of servers: the number of servers involved in this issue and its expansion to the KVM system configuration or connection, which involves the management and cost-effective, especially when the number of larger, often demand more complex, more flexible solutions.
2, the administrator and the number of users: the use of KVM centralized management because it is after, it involves the use of the number of users, to be able to meet the users to control servers within their competence, not the same as the business administrator or the specific user is also relatively large differences in the flexibility to solve the problem, the general increase in cost can be.
3, visit the channel number: blocking rate, that is, multiple users at the same time the use of KVM system obstruction caused by later users can not visit the KVM device, so visit the channel by the combination of administrator and end users to determine the number of management, based on enterprises to identify the specific circumstances of a number of best management terminal by the management terminal to determine the number of KVM equipment.
4, the security issues: speaking from the transmission, digital signal than analog KVM, because the analog signal transmission products are keyboard, mouse, display digital signal, the network was easy to steal, a lot of security risks and how encryption of these signals is critical, the number currently on the market the way KMV encryption: SSL, DES, 3DES, some encryption method such as the existence of security risks 128SSL, so before buying equipment KVM must understand clearly. Transmission security is not only manifested in the encryption method, the most advanced equipment used KVM Video incremental transmission mechanism, only changes in the video transmission of the signal from a security sense, even if it can not be stolen, a strong guarantee of the safety data .
The safety of not only the security of output data, as well as user account security issues, as the KVM is based on the IP network is an open system, so user accounts are also people with ulterior motives have been hacking through a variety of network monitoring tools or the possibility of theft, the current user authentication 128SSL protocol is commonly used, but the authentication system can support the KVM industry-standard X.509 certificates and AAPI / SSPI agreement is a measure of the highest standards of safety certification. In addition the system depends on the concentration of KVM management system hot backup capabilities, and how easy to maintain, in particular, whether the user self-maintenance is very important.
In addition to transport security issues, with the high-end KVM, since the conversion is the use of specialized interface with the server connection, so there is not a conversion interface is activated to send KVM signals and storage of information such as permissions as a standard to measure the system security.
5, management: the way into analog and digital management, and the figures can be divided into special software or browser access, centralized management system is currently available in the market are software and hardware, as well as certification of non-systematic direct access to KVM devices, the existence of security risks, and so on, so what kind of management style suited to your needs carefully before buying a variety of ways to understand the benefits or drawbacks. In general the use of centralized management software, more because of its ability to heat back up and encryption is strong and easy to maintain, so a relatively high security.
Management of the status quo and problems of date center
First, the current operating environment
IT administrators to manage the operation of the engine room, service providers in the engine room debugging system, and even third-party software vendors also need to debug into the room, leading to confusion in order to maintain the engine room is not conducive to security management.
Large-scale data center server connectivity through the local workstation, the remote management through Telenet, the existence of security risks, management efficiency is low;
The use of some of the low-end cabinets 8 or 16 switch -16 management server, each cabinet to place a keyboard, mouse, monitor; each maintenance management need to enter the engine room and at the same time there is only one administrator can use, under very low efficiency;
Second, the problems
Management of human-computer room can not be achieved isolation room physical security can not be guaranteed, there is risk of human failure. IT departments lack of effective technical means to check the operation of the engine room log.
Telenet or through the traditional management style Pc Anywhere host software must wait until the normal start or the process only after the operation. Once the software process crashes, you can not manage, fault recovery time longer. Way through the software, but also do not see BIOS menu, can not be deep-level management.
IT administrators to manage the operation of the engine room, service providers in the engine room debugging system, and even third-party software vendors also need to debug into the room, leading to confusion in order to maintain the engine room is not conducive to security management.
Large-scale data center server connectivity through the local workstation, the remote management through Telenet, the existence of security risks, management efficiency is low;
The use of some of the low-end cabinets 8 or 16 switch -16 management server, each cabinet to place a keyboard, mouse, monitor; each maintenance management need to enter the engine room and at the same time there is only one administrator can use, under very low efficiency;
Second, the problems
Management of human-computer room can not be achieved isolation room physical security can not be guaranteed, there is risk of human failure. IT departments lack of effective technical means to check the operation of the engine room log.
Telenet or through the traditional management style Pc Anywhere host software must wait until the normal start or the process only after the operation. Once the software process crashes, you can not manage, fault recovery time longer. Way through the software, but also do not see BIOS menu, can not be deep-level management.
The superiority of centralized control of IT infrastructure
1. To save space:For these very rapid development of industry, was originally used in a relatively limited space, and the relocation of services will result in a standstill. Under these circumstances, to reduce the number of the keyboard, mouseand monitor , you can increase the server for the new release a lot of space.
2. To improve efficiency:We can imagine, when the system or network maintenance personnel to the server, which consists of a variety of cabinets in the jungle to find out the fault of the machine, the efficiency is not improved. This low efficiency is not only a waste of limited human resources, but also unable to obtain timely breakdown of the repair, network or data center should not have come to a halt. To achieve by a set of keyboard, mouse, monitor, composed of all the machines console landing, will greatly improve the system or network maintenance personnel work more efficiently.
3. To strengthen the management of:Work efficiency, means that the network or data center management to be effective, thereby enhancing the system stability and security.
4. To save the cost of:Network operating costs, especially those who have to run 24-hour network and data center operational costs, network operators have gradually become a key factor in their success. At the same time, hardware and software costs, personnel costs, as well as the cost of space operations is a key component of the cost. For these very rapid development of industry, was originally used in a relatively limited space, and the relocation of services will result in a standstill. Under these circumstances, to reduce the keyboard, mouse, and monitor the number, you can increase the server for the new release a lot of space, while a large number of cost savings.
5. Remote Management:System, remote maintenance and management of these large-scale system is also facing important issues. System management and maintenance personnel can not be a 24-hour duty in the rooms, and mechanical failure may occur at any time due to traffic congestion information system caused by instability in a long time will be greatly damaged the image of business or have a significant loss . Through a remote keyboard, mouse, and monitor the system to achieve remote management, system maintenance is to ensure 24 hours uninterrupted and stable operation of an important means.
6. Environmental protection and energy saving:KVM Switch can be used to avoid the use of multiple displays, thus reducing the radiation, to save air-conditioning, energy consumption, environmental protection and energy saving and create a healthy working environment.
Therefore, the realization of a user using a keyboard, mouse, monitor to access and manipulate more than one function of the host companies will save a lot of space and server resources in peripheral products, effective management to improve the capacity of large-scale applications.
Monday, June 29, 2009
High / medium / low-level computer models KVM switch
Consider the function and the number of ports, KVM can be divided into low-, mid-range, high-end three different levels.
Low-end KVM: such a simple KVM with 2-4 ports, at least in control of two computers and share the same peripheral devices (such as USB printers, scanners) for individual, SOHO group applications, compact size, low cost, small economic size of the computer management tool for users.
In order KVM: in-order port KVM approximately 8 to 16 ports for less than the number of employees of 100 small and medium-sized businesses (SMB) use, in addition to the increase in the number of computer manipulation, but also across different operating systems platform (eg PC, Mac, Sun, and Linux). KVM in order to buy in, the need to pay attention to scalability and compatibility of its design, so as the company's business growth and the engine room equipment to increase capacity expansion can be carried out, and the protection of existing investment in equipment and management to achieve the best efficiency of .
High-end KVM: 32-port models are more high-end switches are, this type of system has a high-density, high port number and multi-user operating characteristics at the same time, can control thousands of hosts and servers for large enterprises and IDC data Center use. Most high-end KVM would be able to support a number of managers, they can by means of password authentication to log in and control at the same time, and to provide more complex and sophisticated functions.
Low-end KVM: such a simple KVM with 2-4 ports, at least in control of two computers and share the same peripheral devices (such as USB printers, scanners) for individual, SOHO group applications, compact size, low cost, small economic size of the computer management tool for users.
In order KVM: in-order port KVM approximately 8 to 16 ports for less than the number of employees of 100 small and medium-sized businesses (SMB) use, in addition to the increase in the number of computer manipulation, but also across different operating systems platform (eg PC, Mac, Sun, and Linux). KVM in order to buy in, the need to pay attention to scalability and compatibility of its design, so as the company's business growth and the engine room equipment to increase capacity expansion can be carried out, and the protection of existing investment in equipment and management to achieve the best efficiency of .
High-end KVM: 32-port models are more high-end switches are, this type of system has a high-density, high port number and multi-user operating characteristics at the same time, can control thousands of hosts and servers for large enterprises and IDC data Center use. Most high-end KVM would be able to support a number of managers, they can by means of password authentication to log in and control at the same time, and to provide more complex and sophisticated functions.
8-port kvm switch features
* Use the standard PS / 2 keyboard ﹑ PS / 2 mouse and VGA display interface.
* Support for IntelliMouse ﹑ Logitech Net Mouse and other MS compatible mouse whole.
* VGA maximum resolution: 2048x1536, Bandwidth: 300MHz.
* Do not need external power supply.
* LED indicator provides status of the host show.
* 3 kinds of switching methods: panel ﹑ button keyboard shortcuts, auto-switching (10 seconds time interval).
* Any time (even when the host or switch, when activated) ﹑ keyboard mouse can not access, access, or replacement of the type.
* Users can arbitrarily shut down or restart any of the host, it will not affect the normal operation of other hosts.
* In the use of KVM switch can be the host-side cable switch (to switch from one host to another).
* OSD menu, convenient computer operation can be cascaded.
* Start the host or KVM switch to use the mouse and keyboard will not cause failure of the computer.
* Switch to a different host, the original state of the host mouse keyboard ﹑ automatically stored and can automatically switch back to resume.
8 kvm switch the scope of application:
* Internet data center
* Information and Control Center
* Telecom Paging System
* Securities / Futures Trading System
* Bank Data Center
* Industrial control environment
* Teaching and learning environment
* Test Center
* Video Surveillance
* Plant Monitoring
* Computer Lab Management
* Other multi-master environment
* Support for IntelliMouse ﹑ Logitech Net Mouse and other MS compatible mouse whole.
* VGA maximum resolution: 2048x1536, Bandwidth: 300MHz.
* Do not need external power supply.
* LED indicator provides status of the host show.
* 3 kinds of switching methods: panel ﹑ button keyboard shortcuts, auto-switching (10 seconds time interval).
* Any time (even when the host or switch, when activated) ﹑ keyboard mouse can not access, access, or replacement of the type.
* Users can arbitrarily shut down or restart any of the host, it will not affect the normal operation of other hosts.
* In the use of KVM switch can be the host-side cable switch (to switch from one host to another).
* OSD menu, convenient computer operation can be cascaded.
* Start the host or KVM switch to use the mouse and keyboard will not cause failure of the computer.
* Switch to a different host, the original state of the host mouse keyboard ﹑ automatically stored and can automatically switch back to resume.
8 kvm switch the scope of application:
* Internet data center
* Information and Control Center
* Telecom Paging System
* Securities / Futures Trading System
* Bank Data Center
* Industrial control environment
* Teaching and learning environment
* Test Center
* Video Surveillance
* Plant Monitoring
* Computer Lab Management
* Other multi-master environment
4-port kvm switch features
* Use the standard PS / 2 keyboard ﹑ PS / 2 mouse and VGA display interface.
* Support for IntelliMouse ﹑ Logitech Net Mouse and other MS compatible mouse whole.
* VGA maximum resolution: 2048x1536, Bandwidth: 300MHz.
* Do not need external power supply.
* LED indicator provides status of the host show.
* 3 kinds of switching methods: panel ﹑ button keyboard shortcuts, auto-switching (10 seconds time interval).
* Any time (even when the host or switch, when activated) ﹑ keyboard mouse can not access, access, or replacement of the type.
* Users can arbitrarily shut down or restart any of the host, it will not affect the normal operation of other hosts.
* In the use of KVM switch can be the host-side cable switch (to switch from one host to another).
* OSD menu, convenient computer operation can be cascaded.
* Start the host or KVM switch to use the mouse and keyboard will not cause failure of the computer.
* Switch to a different host, the original state of the host mouse keyboard ﹑ automatically stored and can automatically switch back to resume.
4 kvm switch the scope of application:
* Internet data center
* Information and Control Center
* Telecom Paging System
* Securities / Futures Trading System
* Bank Data Center
* Industrial control environment
* Teaching and learning environment
* Test Center
* Video Surveillance
* Plant Monitoring
* Computer Lab Management
* Other multi-master environment
* Support for IntelliMouse ﹑ Logitech Net Mouse and other MS compatible mouse whole.
* VGA maximum resolution: 2048x1536, Bandwidth: 300MHz.
* Do not need external power supply.
* LED indicator provides status of the host show.
* 3 kinds of switching methods: panel ﹑ button keyboard shortcuts, auto-switching (10 seconds time interval).
* Any time (even when the host or switch, when activated) ﹑ keyboard mouse can not access, access, or replacement of the type.
* Users can arbitrarily shut down or restart any of the host, it will not affect the normal operation of other hosts.
* In the use of KVM switch can be the host-side cable switch (to switch from one host to another).
* OSD menu, convenient computer operation can be cascaded.
* Start the host or KVM switch to use the mouse and keyboard will not cause failure of the computer.
* Switch to a different host, the original state of the host mouse keyboard ﹑ automatically stored and can automatically switch back to resume.
4 kvm switch the scope of application:
* Internet data center
* Information and Control Center
* Telecom Paging System
* Securities / Futures Trading System
* Bank Data Center
* Industrial control environment
* Teaching and learning environment
* Test Center
* Video Surveillance
* Plant Monitoring
* Computer Lab Management
* Other multi-master environment
The browser features of kvm signal to extend
The use of Cat 5e cable type link local and remote equipment, maximum distance of up to 200 meters.
To support the audio signal, the remote can control the wind and speaker Mike.
Dual-control client operations - may be local or remote control of client management system.
To support the PS / 2 mouse interface and Microsoft Intellimouse.
Built-in ASIC chips, to ensure higher reliability and compatibility.
Display support local DDC2B (graphics card and display to communicate through the DDC).
High video resolution of 1600x1200.
Gain control function - the distance can manually signal strength compensation
Built-in ASIC chips, to provide higher reliability and compatibility. .
Support firmware update.
To support the operating system: Windows 2000, Windows XP, Windows Vista, LINUX, Mac and FreeBSD.
To support the audio signal, the remote can control the wind and speaker Mike.
Dual-control client operations - may be local or remote control of client management system.
To support the PS / 2 mouse interface and Microsoft Intellimouse.
Built-in ASIC chips, to ensure higher reliability and compatibility.
Display support local DDC2B (graphics card and display to communicate through the DDC).
High video resolution of 1600x1200.
Gain control function - the distance can manually signal strength compensation
Built-in ASIC chips, to provide higher reliability and compatibility. .
Support firmware update.
To support the operating system: Windows 2000, Windows XP, Windows Vista, LINUX, Mac and FreeBSD.
The main characteristics of single-port IP KVM remote controller
1, can use any Java features a web browser, through a flexible network server management;
2, regardless of managers, manager in the placement of the local KVM, KVM or not the resettlement areas will be able to easily control the KVM;
3, will enable managers to carry out remote BIOS (Basic Input / Output System) access management;
4, to provide remote KVM proximal and a comprehensive management capabilities;
5, in all the files and data transmission using 256-bit SSL encryption and certificate management to ensure the safety of long-term goal of connecting equipment;
6, the remote computer or the target device, without having to install special software;
7, automatically detects the video screen resolution in order to get the best results;
8, automatically adjust the data transfer rate to meet the cable transmission;
9, high-performance mouse tracking and synchronization;
10, dual redundant power supply automatically lapse;
11, standard KVM link capacity to adapt to most applications in the portfolio of solutions;
12, the remote control of large data server
2, regardless of managers, manager in the placement of the local KVM, KVM or not the resettlement areas will be able to easily control the KVM;
3, will enable managers to carry out remote BIOS (Basic Input / Output System) access management;
4, to provide remote KVM proximal and a comprehensive management capabilities;
5, in all the files and data transmission using 256-bit SSL encryption and certificate management to ensure the safety of long-term goal of connecting equipment;
6, the remote computer or the target device, without having to install special software;
7, automatically detects the video screen resolution in order to get the best results;
8, automatically adjust the data transfer rate to meet the cable transmission;
9, high-performance mouse tracking and synchronization;
10, dual redundant power supply automatically lapse;
11, standard KVM link capacity to adapt to most applications in the portfolio of solutions;
12, the remote control of large data server
VMware , Xen and KVM Comparison
KVM superior than ESX and Xen a place: not only was a very good performance, it can help solve the issue of maintenance of device drivers. There is some truth.
I / O performance is critical to a hypervisor. At the same time, I / O is also a big burden to maintain, because there needs to be supported by a large number of hardware devices, a large number of I / O protocol, high availability, as well as the management of these devices.
VMware choice performance, but the I / O protocol stack on which the hypervisor. Unfortunately, VMware kernel is proprietary, it means that VMware had to the development and maintenance of the entire protocol stack. That would mean that the development would slow down the speed of your hardware may have to wait some time before we can get the support of VMware.
Xen can be chosen to maintain this path, it will all of the I / O operation on the Linux guest inside, that is, the so-called domain-0 inside. Reuse Linux do I / O, Xen's defenders do not have to rewrite the entire I / O protocol stack has been. Unfortunately, however, so the expense of performance: a disruption of Xen have been necessary for the activation in order to switch to domain 0, and everything had been an additional layer of mapping.
Is not to say that Xen has completely solved the problem maintainability: Xen domain 0 kernel is still the oldest Linux 2.6.18 (even though 2.6.25 has also been available. Now Xen has been adopted in the domain 0 pv_ops to solve this problem)
KVM is how to deal with it then?
Like VMware, like, I / O is to be put to the implementation of the context of hypervisor, so performance will not have any damage. Like Xen, like, KVM reuse the entire Linux I / O protocol stack, so users KVM naturally get the latest drivers and I / O protocol stack improvements.
I / O performance is critical to a hypervisor. At the same time, I / O is also a big burden to maintain, because there needs to be supported by a large number of hardware devices, a large number of I / O protocol, high availability, as well as the management of these devices.
VMware choice performance, but the I / O protocol stack on which the hypervisor. Unfortunately, VMware kernel is proprietary, it means that VMware had to the development and maintenance of the entire protocol stack. That would mean that the development would slow down the speed of your hardware may have to wait some time before we can get the support of VMware.
Xen can be chosen to maintain this path, it will all of the I / O operation on the Linux guest inside, that is, the so-called domain-0 inside. Reuse Linux do I / O, Xen's defenders do not have to rewrite the entire I / O protocol stack has been. Unfortunately, however, so the expense of performance: a disruption of Xen have been necessary for the activation in order to switch to domain 0, and everything had been an additional layer of mapping.
Is not to say that Xen has completely solved the problem maintainability: Xen domain 0 kernel is still the oldest Linux 2.6.18 (even though 2.6.25 has also been available. Now Xen has been adopted in the domain 0 pv_ops to solve this problem)
KVM is how to deal with it then?
Like VMware, like, I / O is to be put to the implementation of the context of hypervisor, so performance will not have any damage. Like Xen, like, KVM reuse the entire Linux I / O protocol stack, so users KVM naturally get the latest drivers and I / O protocol stack improvements.
Sunday, June 28, 2009
KVM switch computer performance analysis of the main functions of products
When multi-computer KVM switch more universal application, the user demands of the diverse and increasingly complex, KVM manufacturers continue to develop more innovative intelligent features, the information management personnel, the effective function of the acquisition of new trends to assess the business demand is very important. Note the following new models currently on the market the most advanced product features and functions to provide the system administrator in the procurement of products in the above order of reference.
Interface Connection: Many indoor KVM systems are through the special cable and PS / 2 interface connected, but the keyboard and mouse is a USB interface port can only connect with a USB keyboard and mouse interface, so manufacturers in particular the introduction of KVM the "PS / 2 to USB" adapter to adapter head. But there are only a mouse and keyboard to provide a single USB interface (for example, a number of Logitech models), then the problem occurs. To this end, the current manufacturers are actively engaged in R & D KVM support the latest new models CAT5 specifications.
Hotkey switch: as long as it is in the order of more than KVM, there hotkey (Hot Key) and OSD (On Screen Display) to switch the server in two ways, in other words, the function of KVM, keyboard, through a combination of special keys to switch and control, the emphasis on efficiency and speed of operation of the system administrator, it is very convenient and reliable design.
Intelligent processor: in the above bands are using high-performance KVM microprocessor emulator to manage each KVM port; KVM connection so that all computer can boot at the same time, and to provide automatic scanning, detection and other functions, making KVM is very easy to use and management. In addition, KVM microprocessor intelligent computer can be recorded for each of the CAPSLOCK key, NUM LOCK key, SCROLL LOCK key's use, and has hot-swappable (hot pluggable) function.
Control software: Some models provide sophisticated control software, in order to monitor system hardware and sensors (such as temperature, voltage, fans, etc.), control system components (such as power, blade server, etc.), records of important system events (such as open chassis, the system re-boot, etc.), administrators can remotely manage and respond to system failures.
More synchronous control: In the face of the continued expansion of business demand for rooms, many new KVM can be a different number of computer equipment and managers to provide flexible solutions to more than the effectiveness of control.
Power Management: Power Management KVM will also become the focus of product development. The use of power management features, the system administrator to shut down the system remotely executable, or for any computer or server reboot in order to improve the speed of system maintenance and efficiency. Management staff can remote control the engine room of the computer or server, and stay at home depends on effective power management devices.
Interface Connection: Many indoor KVM systems are through the special cable and PS / 2 interface connected, but the keyboard and mouse is a USB interface port can only connect with a USB keyboard and mouse interface, so manufacturers in particular the introduction of KVM the "PS / 2 to USB" adapter to adapter head. But there are only a mouse and keyboard to provide a single USB interface (for example, a number of Logitech models), then the problem occurs. To this end, the current manufacturers are actively engaged in R & D KVM support the latest new models CAT5 specifications.
Hotkey switch: as long as it is in the order of more than KVM, there hotkey (Hot Key) and OSD (On Screen Display) to switch the server in two ways, in other words, the function of KVM, keyboard, through a combination of special keys to switch and control, the emphasis on efficiency and speed of operation of the system administrator, it is very convenient and reliable design.
Intelligent processor: in the above bands are using high-performance KVM microprocessor emulator to manage each KVM port; KVM connection so that all computer can boot at the same time, and to provide automatic scanning, detection and other functions, making KVM is very easy to use and management. In addition, KVM microprocessor intelligent computer can be recorded for each of the CAPSLOCK key, NUM LOCK key, SCROLL LOCK key's use, and has hot-swappable (hot pluggable) function.
Control software: Some models provide sophisticated control software, in order to monitor system hardware and sensors (such as temperature, voltage, fans, etc.), control system components (such as power, blade server, etc.), records of important system events (such as open chassis, the system re-boot, etc.), administrators can remotely manage and respond to system failures.
More synchronous control: In the face of the continued expansion of business demand for rooms, many new KVM can be a different number of computer equipment and managers to provide flexible solutions to more than the effectiveness of control.
Power Management: Power Management KVM will also become the focus of product development. The use of power management features, the system administrator to shut down the system remotely executable, or for any computer or server reboot in order to improve the speed of system maintenance and efficiency. Management staff can remote control the engine room of the computer or server, and stay at home depends on effective power management devices.
Thursday, June 25, 2009
The problems of buying Kvm console
Choose Kvm console, you should consider the following factors of day-to-day operations:
(1) convenient and simple switch: Different manufacturers offer different ways to control access, including console kvm button operation, or from the keyboard hotkey or a menu screen to operate. Please follow the size of your computer, operating point of the distance and the number of users, select the best combination of flexibility you demand.
(2) more than the application of the operation: If multiple users at the same time you need to control multiple computers, select the combination of a flexible manner to provide multi-user and multi-access of the console kvm solution.
(3) to connect additional computers: When you need to increase, decrease or reschedule the computer, well-designed console kvm will not ask you to turn off the power, you can directly connect a new computer and open the power supply, and will not affect the other kvm console in computer operation.
(4) without interrupting the operation: may occur as a result of outside expectations, please search with "keep-alive" emulation kvm console, even if the loss of the power switch, you can still continue to run the computer.
(5) safe operation: When you want to simplify a user's visit, when appropriate, may also hope that through the use of password security to restrict that only authorized users can access the system.
(6) the ability to replace: the server task, if any interruption of services may need to pay a high price. Kvm console can be certain will continue to provide the keyboard / mouse emulation and with keyboard / mouse port operation of the equipment together with this equipment, you can always kvm console will be connected to the operation of any computer is still unplug and "hot words" exclusive of the keyboard / mouse, direct, zero-fault operation.
(1) convenient and simple switch: Different manufacturers offer different ways to control access, including console kvm button operation, or from the keyboard hotkey or a menu screen to operate. Please follow the size of your computer, operating point of the distance and the number of users, select the best combination of flexibility you demand.
(2) more than the application of the operation: If multiple users at the same time you need to control multiple computers, select the combination of a flexible manner to provide multi-user and multi-access of the console kvm solution.
(3) to connect additional computers: When you need to increase, decrease or reschedule the computer, well-designed console kvm will not ask you to turn off the power, you can directly connect a new computer and open the power supply, and will not affect the other kvm console in computer operation.
(4) without interrupting the operation: may occur as a result of outside expectations, please search with "keep-alive" emulation kvm console, even if the loss of the power switch, you can still continue to run the computer.
(5) safe operation: When you want to simplify a user's visit, when appropriate, may also hope that through the use of password security to restrict that only authorized users can access the system.
(6) the ability to replace: the server task, if any interruption of services may need to pay a high price. Kvm console can be certain will continue to provide the keyboard / mouse emulation and with keyboard / mouse port operation of the equipment together with this equipment, you can always kvm console will be connected to the operation of any computer is still unplug and "hot words" exclusive of the keyboard / mouse, direct, zero-fault operation.
From entry to the master switch learning
What can KVM switch do?
KVM is a keyboard, monitor, mouse, collectively the three devices. Switch KVM switch is a keyboard, mouse, monitor equipment signals. KVM switch allows the operator to use a KVM, several sets of computer manipulation.
What is OSD?
OSD is abbreviation OnScreenDisplay. Refers to the normal screen display information superimposed. KVM switch in use, due to the operation of many hosts, know that the current operation which is very important. Therefore, many advanced KVM switch OSD technologies used in the screen display superimposed KVM current channel information. The switch is automatic type, OSD is very important.
Automatic, Manual of the difference?
Generally speaking, refers to automatic type with keyboard, mouse, analog functions, the electronic switch to switch; manually type refers to does not have analog functions by mechanical switching equipment. Automatic switch-based access by the host device is not lost, you can start at the same time can be a variety of equipment types, a mix of a variety of operating systems. And manually type it can not do.
KVM is a keyboard, monitor, mouse, collectively the three devices. Switch KVM switch is a keyboard, mouse, monitor equipment signals. KVM switch allows the operator to use a KVM, several sets of computer manipulation.
What is OSD?
OSD is abbreviation OnScreenDisplay. Refers to the normal screen display information superimposed. KVM switch in use, due to the operation of many hosts, know that the current operation which is very important. Therefore, many advanced KVM switch OSD technologies used in the screen display superimposed KVM current channel information. The switch is automatic type, OSD is very important.
Automatic, Manual of the difference?
Generally speaking, refers to automatic type with keyboard, mouse, analog functions, the electronic switch to switch; manually type refers to does not have analog functions by mechanical switching equipment. Automatic switch-based access by the host device is not lost, you can start at the same time can be a variety of equipment types, a mix of a variety of operating systems. And manually type it can not do.
Folding LCD lcdkvm
Folding LCD lcdkvm
LCD 19-inch folding LCD conversion kit
Model: Lcd-3-19
Specifications (L x W x H): 19 "Rack Mount / 1U height / depth (the general version of 610mm, automotive version of 434mm)
Brand: FeiLan
Origin: Taiwan
Military grade LCD console LCD (lcd-3-19) specific features:
- 19 "LCD LCD module;
- Multi-function keyboard, mouse module;
- CCC power adapter module;
- 1U-specific installation guide;
- Matching (USB + PS2) interface cable;
- The rationale for lines matching a dedicated aircraft.
- Place of Origin - Taiwan;
Product advantages:
- Design modular products to facilitate the expansion, maintenance.
- Products designed for 'military grade' user design, production;
- 1U installation guide, a person on the rack for easy installation;
- 19-inch rack-mounted, suitable for any brand (FL, IBM, HP, APC, etc.) Server Cabinets;
- 1U high full-height, removable design, saving rack space;
- Multi-function notebook keyboard (including numeric keypad) and 18 multimedia keys;
- Multi-touch mouse, easy to browse the Web;
- CCC power adapter module can be used on demand (24V, 48V, 220V) power supply module;
- 19 "LCD display modules can be replaced 17" 19 "20", such as LCD modules;
- Adoption of the CCC / FC / EU ROHS (green) certification
- Can be used according to different environment, to switch to a different module!
LCD 19-inch folding LCD conversion kit
Model: Lcd-3-19
Specifications (L x W x H): 19 "Rack Mount / 1U height / depth (the general version of 610mm, automotive version of 434mm)
Brand: FeiLan
Origin: Taiwan
Military grade LCD console LCD (lcd-3-19) specific features:
- 19 "LCD LCD module;
- Multi-function keyboard, mouse module;
- CCC power adapter module;
- 1U-specific installation guide;
- Matching (USB + PS2) interface cable;
- The rationale for lines matching a dedicated aircraft.
- Place of Origin - Taiwan;
Product advantages:
- Design modular products to facilitate the expansion, maintenance.
- Products designed for 'military grade' user design, production;
- 1U installation guide, a person on the rack for easy installation;
- 19-inch rack-mounted, suitable for any brand (FL, IBM, HP, APC, etc.) Server Cabinets;
- 1U high full-height, removable design, saving rack space;
- Multi-function notebook keyboard (including numeric keypad) and 18 multimedia keys;
- Multi-touch mouse, easy to browse the Web;
- CCC power adapter module can be used on demand (24V, 48V, 220V) power supply module;
- 19 "LCD display modules can be replaced 17" 19 "20", such as LCD modules;
- Adoption of the CCC / FC / EU ROHS (green) certification
- Can be used according to different environment, to switch to a different module!
Answers to frequently asked questions KVM switch
Q1:The mouse will fail to work when manual KVM in the shutdown
Cause: When the shutdown ,the host mouse to close the program.
Conclusion: To avoid the above, when the click on the "shutdown" after the host has not been fully completed before the program shuts down quickly switch to the next is not Taiwan host shutdown.
Q2: For more than one host and switch the system boot and shutdown sequence of how?
Conclusion: The boot time, it is recommended users switch to open and then open the host in turn.
Q3: When hot-plug, individual hosts may be faulty mouse?
Cause: This is because the individual motherboard does not support PS / 2 mouse caused by hot-swappable.
If there is OSD menu function, you can use the "OSD" in order to activate the mouse port.
Or: check whether the mouse cable OK! For another mouse and try again,
Q4: OSD does not show the window?
Cause: This is because the display refresh rate is too high a result, adjust the display's refresh rate to 75Hz 1280 × 1024 or 85Hz 800 × 600.
Q5: boot or when switching audio prompt appears twice, or a long tone?
Cause: This is because the switch is connected to the keyboard or mouse or malfunction caused by poor contact of
Cause: When the shutdown ,the host mouse to close the program.
Conclusion: To avoid the above, when the click on the "shutdown" after the host has not been fully completed before the program shuts down quickly switch to the next is not Taiwan host shutdown.
Q2: For more than one host and switch the system boot and shutdown sequence of how?
Conclusion: The boot time, it is recommended users switch to open and then open the host in turn.
Q3: When hot-plug, individual hosts may be faulty mouse?
Cause: This is because the individual motherboard does not support PS / 2 mouse caused by hot-swappable.
If there is OSD menu function, you can use the "OSD" in order to activate the mouse port.
Or: check whether the mouse cable OK! For another mouse and try again,
Q4: OSD does not show the window?
Cause: This is because the display refresh rate is too high a result, adjust the display's refresh rate to 75Hz 1280 × 1024 or 85Hz 800 × 600.
Q5: boot or when switching audio prompt appears twice, or a long tone?
Cause: This is because the switch is connected to the keyboard or mouse or malfunction caused by poor contact of
Usb kvm switch
Usb kvm switch is constituted from transmitters (Sender marked with the words) and receiver (Receiver marked with the word), through a single cable to the USB host computer interface, video interface to extend up to 300 meters, the user can furthest 300 meters using the remote computer, the receiving end at the same time to extend the 2 keyboard and mouse ports.
At the same time, the proximal end mainframe computer, but also provides a VGA interface, users can also use the local computer user-friendly controls on the use of computers. Desktop applications such as can remote access to a data service center, can host in a safe place, such as concentration, which would facilitate the maintenance, strengthening the security of data to facilitate the management of workstations, to reduce noise and heat. The main advantages:
1 can be the main computer keyboard, mouse, video interface to extend up to 300 meters
2 plus or minus 15kv ESD
3 can be used in remote USB keyboard and mouse to operate the computer
4 in the proximal and the host computer keyboard and mouse interface uses a USB interface
5 in the distal and proximal provide a VGA video interface
6 in the proximal and remote switches are provided to restart the host computer interface of the jumper
7 using a single cable (CAT5, CAT5E, CAT6), low-cost
8 hot-plug the keyboard and mouse support
9 operating systems support USB devices can be used
10 shows a remote keyboard and mouse control for real-time, without delay, and the strong anti-interference, then the receiving end need to 7.5V DC power supply.
At the same time, the proximal end mainframe computer, but also provides a VGA interface, users can also use the local computer user-friendly controls on the use of computers. Desktop applications such as can remote access to a data service center, can host in a safe place, such as concentration, which would facilitate the maintenance, strengthening the security of data to facilitate the management of workstations, to reduce noise and heat. The main advantages:
1 can be the main computer keyboard, mouse, video interface to extend up to 300 meters
2 plus or minus 15kv ESD
3 can be used in remote USB keyboard and mouse to operate the computer
4 in the proximal and the host computer keyboard and mouse interface uses a USB interface
5 in the distal and proximal provide a VGA video interface
6 in the proximal and remote switches are provided to restart the host computer interface of the jumper
7 using a single cable (CAT5, CAT5E, CAT6), low-cost
8 hot-plug the keyboard and mouse support
9 operating systems support USB devices can be used
10 shows a remote keyboard and mouse control for real-time, without delay, and the strong anti-interference, then the receiving end need to 7.5V DC power supply.
KVM switch market, the main computer models and types
Note the two main classification.Analog and digital KVM
From the console to operate the KVM client's point of view of technological development, KVM can be classified into analog, digital two broad categories. Information room staff need to consider distance, number of users, ease of wiring and other factors, to be purchased in order to determine the type of switch.
Almost all the early KVM switches are analog (Analog), the current products of this type still occupies a very high proportion of the market. Analog KVM switch is a plug-and-play equipment, because do not need to install software, so very easy to complete the setup and configuration. Between the user and the server if the distance of 100 meters, and focus on the management of the same place, then analog KVM is the best option. Generally speaking, analog KVM switch with input port 2/4/8/16/24/32/64 can connect to all servers or related peripherals, and has output port 1/2/4/8/16 connected to the console .
The using of analog KVM, information managers do not need to pre-set to BIOS or operating system can be connected to the direct management of any server or external device. Analog KVM can stack by (cascading) the expansion of way; for example, a 64-port KVM can be connected to the other 64 the same 64-port KVM, will be able to provide up to 4096 (64x64) output port.
Compared with the analog KVM, the integration of IP network technology (IP-based) digital KVM systems managers to meet the demand for remote access. Digital KVM charged with the server from the keyboard, monitor and mouse capture analog signals, and then converted into digital packets and encrypted and compressed so that it can safely through the TCP / IP networks. In the digital KVM products, the console (console) has been replaced by a remote PC, the user only through the digital KVM offered by the remote client software to control remote server to receive and send all the messages. Can control the distance, no far-reaching.
For the world's large enterprise branch offices, or remote access services provided by network operators, the digital KVM provides a more convenient, because this type of solution instead of using the IP network cable to connect to the server, thus fully the distance between the lifting of restrictions, managers were able to access and manage any corner of the world's servers.
However, in order to solve the analog KVM distance limitations, many long-range management solutions also should be for us. A global leader in KVM ATEN example, the room to address the management of multinational corporations, has started to launch a CN-6000 KVM on the NET remote management KVM programs, as well as CP-0108 Power on the NET remote power management program, and then with original KM0432 Matrix KVM 32 port KVM control over multi-computer switch, this set of complete solutions over IP, will ensure that the enterprise server remote management anytime, anywhere.
From the console to operate the KVM client's point of view of technological development, KVM can be classified into analog, digital two broad categories. Information room staff need to consider distance, number of users, ease of wiring and other factors, to be purchased in order to determine the type of switch.
Almost all the early KVM switches are analog (Analog), the current products of this type still occupies a very high proportion of the market. Analog KVM switch is a plug-and-play equipment, because do not need to install software, so very easy to complete the setup and configuration. Between the user and the server if the distance of 100 meters, and focus on the management of the same place, then analog KVM is the best option. Generally speaking, analog KVM switch with input port 2/4/8/16/24/32/64 can connect to all servers or related peripherals, and has output port 1/2/4/8/16 connected to the console .
The using of analog KVM, information managers do not need to pre-set to BIOS or operating system can be connected to the direct management of any server or external device. Analog KVM can stack by (cascading) the expansion of way; for example, a 64-port KVM can be connected to the other 64 the same 64-port KVM, will be able to provide up to 4096 (64x64) output port.
Compared with the analog KVM, the integration of IP network technology (IP-based) digital KVM systems managers to meet the demand for remote access. Digital KVM charged with the server from the keyboard, monitor and mouse capture analog signals, and then converted into digital packets and encrypted and compressed so that it can safely through the TCP / IP networks. In the digital KVM products, the console (console) has been replaced by a remote PC, the user only through the digital KVM offered by the remote client software to control remote server to receive and send all the messages. Can control the distance, no far-reaching.
For the world's large enterprise branch offices, or remote access services provided by network operators, the digital KVM provides a more convenient, because this type of solution instead of using the IP network cable to connect to the server, thus fully the distance between the lifting of restrictions, managers were able to access and manage any corner of the world's servers.
However, in order to solve the analog KVM distance limitations, many long-range management solutions also should be for us. A global leader in KVM ATEN example, the room to address the management of multinational corporations, has started to launch a CN-6000 KVM on the NET remote management KVM programs, as well as CP-0108 Power on the NET remote power management program, and then with original KM0432 Matrix KVM 32 port KVM control over multi-computer switch, this set of complete solutions over IP, will ensure that the enterprise server remote management anytime, anywhere.
KVM systems to help companies build effective
Multi-computer KVM switch network of the past is often seen as the exclusive data center equipment, this is because the provision of services such as hosting the professional room to provide 99.999% reliability of the absolute strict, so the effective management in order to avoid non-essential error with to serious consequences, and KVM solutions to simplify the characteristics and resource sharing, as well as with the current information environment more in line with the needs of advanced features, based on the IP network characteristics, such as remote support to the deployment of not only become a focus of IDC It is also the best partner management staff.
Management of small and medium-sized much-needed powerful program
Market Research Center, Penn, Schoen & Berland Associates study released report shows the trend of small and medium-sized businesses who wish to improve operational efficiency, information technology must catch up with the pace of development, so the report pointed out that 96% of executives that it will be the key to the decision-making to buy new IT equipment for their successful.
In the expansion of infrastructure at the same time, KVM switch more than the computer has become indispensable for effective help. In addition to facilitate the effective monitoring and managing the operation of all of the information position equipment, KVM switches and more computers for small and medium enterprises can save considerable space and room monitor, keyboard and other hardware costs. Configuration as a result of relatively few small and medium-sized professional and technical personnel, therefore, in choosing the relevant solutions, most of them will need to rely on systems integrators to assist in the assessment and selection of the best cost / performance than the KVM, and provide a sound planning of space and Shelves in order to minimize the cost of electricity supply and erection.
KVM system scalability is an important consideration, so that enterprises can stack the way through the series more KVM switches and centralized management to maintain and KVM extension with the original equipment. At the same time, KVM's cross-platform design is also very important, such as the latest KVM many are advertised at the same time to support Windows, Linux and SUN operating systems such as, purchase with such a cross-platform KVM product will allow small and medium enterprises or systems integrators room management to achieve the goal of optimization.
KVM large enterprises through to reach the goal of cross-border control
Compared to small and medium-sized enterprises of KVM applications have different focus. First of all, these large data storage capacity of enterprises are quite massive and had a few years ago to focus on a large number of servers within a single centralized control room. Most of these systems are responsible for the implementation of critical applications, that can go wrong, so the engine room as the integrated management platform KVM, its high-availability and powerful management and configuration functions, system integrators and network management staff during the KVM When purchasing and deployment of the elements must be taken into account, in order to allow enterprises to use resources efficiently and reduce the potential threat of downtime.
Therefore, the high-end KVM products become part of their procurement and deployment of the first choice, for example, some high-end KVM products to offer enterprises and 16 console server with up to 4096's ability to connect, and then through to the implementation of relevant applications complex control functions.
On the other hand, many large enterprises around the world have set up branch offices, factories and logistics centers, how to manage from a single room to a different geographic or server systems in different countries, not only to test the technical capacity of KVM manufacturer, has made support network features high-end models, such as KVM Over IP, the recent extremely popular in the market. This technology allows a number of host groups scattered through the network and a large number of servers the company's links with the most effective control.
SOHO / personal users
In fact, with the increasing popularity of information products, KVM switches and more computer companies are no longer the issue of patents, the rise of the individual studios, as well as the development of a home network so that users at the same time many individuals have more than two computers, At this time of the entry-level low-end KVM can be used to help users quickly complete the system settings and re-engineering. In order to facilitate the user operation, the function of these products are very simple, probably only a simple switch to provide system functions, and supports Plug and Play (PnP) installation, to facilitate the operation and settings. Graphic designer for many, its easy in Mac and PC systems for fast switching, thereby significantly enhancing efficiency. In addition, innovative market entry-level USB KVM, can also share USB interface devices at the same time, in order to bring users the convenience of a high.
KVM prices as a result has been declining, more and more ethnic SOHO and personal users with the procurement of such management programs and will, I believe will bring another wave of personal network management.
Management of small and medium-sized much-needed powerful program
Market Research Center, Penn, Schoen & Berland Associates study released report shows the trend of small and medium-sized businesses who wish to improve operational efficiency, information technology must catch up with the pace of development, so the report pointed out that 96% of executives that it will be the key to the decision-making to buy new IT equipment for their successful.
In the expansion of infrastructure at the same time, KVM switch more than the computer has become indispensable for effective help. In addition to facilitate the effective monitoring and managing the operation of all of the information position equipment, KVM switches and more computers for small and medium enterprises can save considerable space and room monitor, keyboard and other hardware costs. Configuration as a result of relatively few small and medium-sized professional and technical personnel, therefore, in choosing the relevant solutions, most of them will need to rely on systems integrators to assist in the assessment and selection of the best cost / performance than the KVM, and provide a sound planning of space and Shelves in order to minimize the cost of electricity supply and erection.
KVM system scalability is an important consideration, so that enterprises can stack the way through the series more KVM switches and centralized management to maintain and KVM extension with the original equipment. At the same time, KVM's cross-platform design is also very important, such as the latest KVM many are advertised at the same time to support Windows, Linux and SUN operating systems such as, purchase with such a cross-platform KVM product will allow small and medium enterprises or systems integrators room management to achieve the goal of optimization.
KVM large enterprises through to reach the goal of cross-border control
Compared to small and medium-sized enterprises of KVM applications have different focus. First of all, these large data storage capacity of enterprises are quite massive and had a few years ago to focus on a large number of servers within a single centralized control room. Most of these systems are responsible for the implementation of critical applications, that can go wrong, so the engine room as the integrated management platform KVM, its high-availability and powerful management and configuration functions, system integrators and network management staff during the KVM When purchasing and deployment of the elements must be taken into account, in order to allow enterprises to use resources efficiently and reduce the potential threat of downtime.
Therefore, the high-end KVM products become part of their procurement and deployment of the first choice, for example, some high-end KVM products to offer enterprises and 16 console server with up to 4096's ability to connect, and then through to the implementation of relevant applications complex control functions.
On the other hand, many large enterprises around the world have set up branch offices, factories and logistics centers, how to manage from a single room to a different geographic or server systems in different countries, not only to test the technical capacity of KVM manufacturer, has made support network features high-end models, such as KVM Over IP, the recent extremely popular in the market. This technology allows a number of host groups scattered through the network and a large number of servers the company's links with the most effective control.
SOHO / personal users
In fact, with the increasing popularity of information products, KVM switches and more computer companies are no longer the issue of patents, the rise of the individual studios, as well as the development of a home network so that users at the same time many individuals have more than two computers, At this time of the entry-level low-end KVM can be used to help users quickly complete the system settings and re-engineering. In order to facilitate the user operation, the function of these products are very simple, probably only a simple switch to provide system functions, and supports Plug and Play (PnP) installation, to facilitate the operation and settings. Graphic designer for many, its easy in Mac and PC systems for fast switching, thereby significantly enhancing efficiency. In addition, innovative market entry-level USB KVM, can also share USB interface devices at the same time, in order to bring users the convenience of a high.
KVM prices as a result has been declining, more and more ethnic SOHO and personal users with the procurement of such management programs and will, I believe will bring another wave of personal network management.
Six major factors of choosing to use KVM switch for operation
Make sure a KVM switch that you used allows you to your way of integration and operation of all computer systems. Allow you to integrate your computer or dispersed into several groups, or even hundreds of meters to operate outside.
Users also should consider to the following day-to-day operation of the actual factors when selecting KVM switches:
1. Convenience, a simple switch: Different manufacturers offer different ways to control access, including KVM switch button on the operation, or from the keyboard hotkey or a menu screen to operate. Please follow the size of your computer, operating point of the distance and the number of users, select the best combination of flexibility you demand.
2. More than the application of the operation: If multiple users at the same time you need to control multiple computers, select the combination of a flexible manner to provide multi-user and multi-access of the KVM switch solutions.
3. To connect additional computers: When you need to increase, decrease or reschedule the computer, the design of a good KVM switch will not turn off power to you, you can directly connect a new computer and open the power supply, and will not affect the other in KVM switch to operate the computer.
4. Uninterrupted operation: may occur as a result of outside expectations, please search with "keep-alive" emulation of the KVM switch, even if the loss of the power switch, you can still continue to run the computer.
5. Safe operation: When you want to simplify a user's visit, when appropriate, may also hope that through the use of password security to restrict that only authorized users can access the system.
6. To replace the capacity of: the server task, if any interruption of services may need to pay a high price. Some KVM switches can be and will continue to provide keyboard / mouse emulation and with keyboard / mouse port operation of the equipment together with this equipment, you can always be connected to the KVM switch is also the operation of any computer unplug and "hot words" exclusive of the keyboard / mouse, direct, zero-fault operation.
The whole KVM switch is usually applied to one or more administrators to manage more than one computer environment, or a user must be 2 or more computers operating environment, including network operation centers, information centers, server rooms, software development, testing laboratories, service centers, departments, local area network and desktop installation of multiple computers at the same time. In line with your mode of operation of the KVM switch can provide value-added productivity, far exceeding the space-saving hardware and furniture. However, unless you have chosen to determine the "solution" will not lead to new problems, do not believe that all of the guarantee, look for the operation of your needs and match, and easily and economically expand, upgrade and re-configured KVM switch, select the combination of hardware regardless of what you can carry out the work of a perfect switch.
Users also should consider to the following day-to-day operation of the actual factors when selecting KVM switches:
1. Convenience, a simple switch: Different manufacturers offer different ways to control access, including KVM switch button on the operation, or from the keyboard hotkey or a menu screen to operate. Please follow the size of your computer, operating point of the distance and the number of users, select the best combination of flexibility you demand.
2. More than the application of the operation: If multiple users at the same time you need to control multiple computers, select the combination of a flexible manner to provide multi-user and multi-access of the KVM switch solutions.
3. To connect additional computers: When you need to increase, decrease or reschedule the computer, the design of a good KVM switch will not turn off power to you, you can directly connect a new computer and open the power supply, and will not affect the other in KVM switch to operate the computer.
4. Uninterrupted operation: may occur as a result of outside expectations, please search with "keep-alive" emulation of the KVM switch, even if the loss of the power switch, you can still continue to run the computer.
5. Safe operation: When you want to simplify a user's visit, when appropriate, may also hope that through the use of password security to restrict that only authorized users can access the system.
6. To replace the capacity of: the server task, if any interruption of services may need to pay a high price. Some KVM switches can be and will continue to provide keyboard / mouse emulation and with keyboard / mouse port operation of the equipment together with this equipment, you can always be connected to the KVM switch is also the operation of any computer unplug and "hot words" exclusive of the keyboard / mouse, direct, zero-fault operation.
The whole KVM switch is usually applied to one or more administrators to manage more than one computer environment, or a user must be 2 or more computers operating environment, including network operation centers, information centers, server rooms, software development, testing laboratories, service centers, departments, local area network and desktop installation of multiple computers at the same time. In line with your mode of operation of the KVM switch can provide value-added productivity, far exceeding the space-saving hardware and furniture. However, unless you have chosen to determine the "solution" will not lead to new problems, do not believe that all of the guarantee, look for the operation of your needs and match, and easily and economically expand, upgrade and re-configured KVM switch, select the combination of hardware regardless of what you can carry out the work of a perfect switch.
Wednesday, June 24, 2009
The advantages of KVM, mainly in four areas
Space: for these very rapid development of industry, the space previously occupied by a relatively limited, and the relocation of services will result in a standstill. Under these circumstances, the reduction of peripherals can be added to make a lot of server space.
Efficiency and cost: It can be imagined, when the system or network maintenance personnel to the server, which consists of a variety of cabinets in the jungle to find out the fault of the machine, the efficiency is very low. This low efficiency is not only a waste of limited human resources, but also unable to obtain timely breakdown of the repair, network or data center should not have come to a halt. Can be formed from a KVM console log all of the machines, it is bound to greatly improve the system or network maintenance personnel work more efficiently.
Management: to improve the efficiency of means that the network or data center management to be effective, thereby enhancing the system stability and security.
Remote management: remote system maintenance and management of these large-scale system is also facing important issues. System management and maintenance personnel can not be a 24-hour duty in the rooms, and mechanical failure may occur at any time, due to the blocking of information resulting from a long period of instability in the system will greatly damage the image of business or result in major losses. Therefore, remote management, system maintenance is to ensure 24 hours uninterrupted and stable operation of an important means.
Efficiency and cost: It can be imagined, when the system or network maintenance personnel to the server, which consists of a variety of cabinets in the jungle to find out the fault of the machine, the efficiency is very low. This low efficiency is not only a waste of limited human resources, but also unable to obtain timely breakdown of the repair, network or data center should not have come to a halt. Can be formed from a KVM console log all of the machines, it is bound to greatly improve the system or network maintenance personnel work more efficiently.
Management: to improve the efficiency of means that the network or data center management to be effective, thereby enhancing the system stability and security.
Remote management: remote system maintenance and management of these large-scale system is also facing important issues. System management and maintenance personnel can not be a 24-hour duty in the rooms, and mechanical failure may occur at any time, due to the blocking of information resulting from a long period of instability in the system will greatly damage the image of business or result in major losses. Therefore, remote management, system maintenance is to ensure 24 hours uninterrupted and stable operation of an important means.
The advantages and disadvantages of digital KVM
Digital KVM program benefits:
1, all users can operat it through IP network , it has remote access
capability
2, the expansion is relatively easy to do
Digital KVM options:
1, video results for all users affected by network quality, and high-resolution true color is not possible, there are certainly lagging behind a sense of the size and network bandwidth to the lagged impact of influenza
2, occupied by IP resources, each piece of equipment must be occupied by an IP
3, always face the risk of IP network security, IP is more and more, the greater the risk of facing
4, in order to reduce security risks, the need to increase the input of the corporate firewall
5, occupied by the user of network resources, from the physics of the integrated wiring system to the network's bandwidth traffic
6, the need to increase the independence of the user authentication system to increase the amount of the maintenance of debugging, if the certification system failures will not be able to work
7, if the network will not be able to interrupt the normal work
8,it has just been put on the market soon, it is still gradually improving and developing them
1, all users can operat it through IP network , it has remote access
capability
2, the expansion is relatively easy to do
Digital KVM options:
1, video results for all users affected by network quality, and high-resolution true color is not possible, there are certainly lagging behind a sense of the size and network bandwidth to the lagged impact of influenza
2, occupied by IP resources, each piece of equipment must be occupied by an IP
3, always face the risk of IP network security, IP is more and more, the greater the risk of facing
4, in order to reduce security risks, the need to increase the input of the corporate firewall
5, occupied by the user of network resources, from the physics of the integrated wiring system to the network's bandwidth traffic
6, the need to increase the independence of the user authentication system to increase the amount of the maintenance of debugging, if the certification system failures will not be able to work
7, if the network will not be able to interrupt the normal work
8,it has just been put on the market soon, it is still gradually improving and developing them
The advantages and disadvantages of analog KVM
Analog KVM advantages:
1, with good operation of the video effects, true color, high resolution, without any lag operator a sense of
2, after the development of a sound, analog products also has a good capacity expansion
3, safe, completely non-existent IP network of the risk faced by
4, users do not occupy any network resources
5, because the IP network will not be affected by the interruption of the operation of the server
6, pure hardware environment, plug-and-play, simple installation, low maintenance
7, product maturity, have a broad customer base.
The shortcomings of analog KVM:
Limit the distance the analog signal, if more than distance, it can not operate. (Currently 300 meters can be achieved has been the signal transmission)
If the IP-Reach devices connected to the end of analog KVM systems, KVM systems for the entire simulation to provide a visit to the interface IP, to meet the needs of remote access users.
User in the room have the simulation program at the same time all the advantages of IP-Reach interface also has some characteristics:
1, occupy very little resources, IP addresses, typically using a
2, Raritan's IP products use only TCP / IP communication port, and a firewall can be a mechanism for users to set arbitrary
3, based on the user's network status, remote access users to customize the bandwidth usage
4, if the network, only the impact of remote access users, local users to simulate the normal operation of
5, Raritan certain IP products built Modem, can be a state of emergency in the network does not make sense to continue to achieve remote access
6, IP-Reach devices connected to analog front-end of the KVM system, not the server itself, so hackers can not affect the server IP-Reach.
7, no need to set up a dedicated authentication server, a dedicated authentication server will not affect the system failure
1, with good operation of the video effects, true color, high resolution, without any lag operator a sense of
2, after the development of a sound, analog products also has a good capacity expansion
3, safe, completely non-existent IP network of the risk faced by
4, users do not occupy any network resources
5, because the IP network will not be affected by the interruption of the operation of the server
6, pure hardware environment, plug-and-play, simple installation, low maintenance
7, product maturity, have a broad customer base.
The shortcomings of analog KVM:
Limit the distance the analog signal, if more than distance, it can not operate. (Currently 300 meters can be achieved has been the signal transmission)
If the IP-Reach devices connected to the end of analog KVM systems, KVM systems for the entire simulation to provide a visit to the interface IP, to meet the needs of remote access users.
User in the room have the simulation program at the same time all the advantages of IP-Reach interface also has some characteristics:
1, occupy very little resources, IP addresses, typically using a
2, Raritan's IP products use only TCP / IP communication port, and a firewall can be a mechanism for users to set arbitrary
3, based on the user's network status, remote access users to customize the bandwidth usage
4, if the network, only the impact of remote access users, local users to simulate the normal operation of
5, Raritan certain IP products built Modem, can be a state of emergency in the network does not make sense to continue to achieve remote access
6, IP-Reach devices connected to analog front-end of the KVM system, not the server itself, so hackers can not affect the server IP-Reach.
7, no need to set up a dedicated authentication server, a dedicated authentication server will not affect the system failure
Technical characteristics and the development of KVM
KVM switch directly connected through the keyboard, video and mouse (KVM) ports, so you can access and control computer. KVM technology do not need the target server modifications or software. This means that the BIOS in Windows environment, it could access to the target computer in any time. KVM provides true motherboard level access, and support multi-platform servers and serial devices.
KVM technology has moved from the initial concept of the development of an enterprise IT infrastructure management system. You can choose from Avocent DSView ® 3 management software interface such as direct access to a single remote location is located in a number of servers and equipment. Avocent KVM over IP solutions, the Treasury is now prepared a comprehensive multi-site failover capabilities, in line with the new server management standard (IPMI) direct interface, and the local storage media to a remote location mapping function.
Analog KVM technology
Analog KVM switching system directly connected to any computer on the keyboard, video and mouse. It provides completely independent of the software and network operating system to install a simple plug-and-play system, and users of multiple computers for real-time access. Analog KVM system is most appropriate for users and the environment at the same location, is access to centralized multi-PC and multi-technology environments rack. Avocent analog KVM solution includes SwitchView, AutoView and AMX KVM switches.
KVM over IP
KVM over IP keyboard, video and mouse data digitization, and the use of IP technology for mobile data KVM. KVM over IP direct connection to any computer on the KVM signals, without invasive computer, without added software / hardware. The technology uses the existing network infrastructure to support local and remote users. KVM over IP in different hardware environment is the management of multi-site data centers and branch offices the ideal technology.
KVM technology has moved from the initial concept of the development of an enterprise IT infrastructure management system. You can choose from Avocent DSView ® 3 management software interface such as direct access to a single remote location is located in a number of servers and equipment. Avocent KVM over IP solutions, the Treasury is now prepared a comprehensive multi-site failover capabilities, in line with the new server management standard (IPMI) direct interface, and the local storage media to a remote location mapping function.
Analog KVM technology
Analog KVM switching system directly connected to any computer on the keyboard, video and mouse. It provides completely independent of the software and network operating system to install a simple plug-and-play system, and users of multiple computers for real-time access. Analog KVM system is most appropriate for users and the environment at the same location, is access to centralized multi-PC and multi-technology environments rack. Avocent analog KVM solution includes SwitchView, AutoView and AMX KVM switches.
KVM over IP
KVM over IP keyboard, video and mouse data digitization, and the use of IP technology for mobile data KVM. KVM over IP direct connection to any computer on the KVM signals, without invasive computer, without added software / hardware. The technology uses the existing network infrastructure to support local and remote users. KVM over IP in different hardware environment is the management of multi-site data centers and branch offices the ideal technology.
What are advantages of the Cat 5 cable ?
For the administrator of computer room, the best obvious benefits of using Cat 5 KVM is great progress in space. We know that KVM administrator use KVM to manage the entire data center of the dozens or even hundreds of servers, and each data center because of its age and idea-building reasons, the Federation of noise, temperature, and there are a lot of space layout the problem, so obvious a problem facing every manager in the front of the KVM cable if long enough, then he will have to keep moving away to accommodate the location of the "long enough KVM switch," then?
Clearly, we can not let the administrator to become a moving management platform, with their feet to solve the problem of KVM wire long enough, therefore, for the management of a large number of servers, especially when these scattered throughout the When - This large-scale enterprises is very common, they need a KVM management can be extended to the foot of his ways, and this solution is to wire Cat.
Purely from the distance, the use of Cat 5 cable can be extended to connect from more than 300 meters, the administrator can be the engine room all the KVM to connect to his feet, for a unified management control at the same time, the flexibility of the overall wire also greatly enhanced, for the traditional three-and-line, its length can not be any change in the share space larger wire, but Cat cable with soft texture, small size and high flexibility.
For example, three and a common line, such as 1.8 meters in length, 3 meters or 5 meters, if the server from the KVM is not just, it is necessary to buy extra wire length to meet the application environment, but the Cat 5 wire can be free on demand cut into appropriate length, there would be no extra finishing wire is not easy, but also the space occupied by the engine room and the impact of heat and other issues, but also to facilitate routing between different cabinet.
Clearly, we can not let the administrator to become a moving management platform, with their feet to solve the problem of KVM wire long enough, therefore, for the management of a large number of servers, especially when these scattered throughout the When - This large-scale enterprises is very common, they need a KVM management can be extended to the foot of his ways, and this solution is to wire Cat.
Purely from the distance, the use of Cat 5 cable can be extended to connect from more than 300 meters, the administrator can be the engine room all the KVM to connect to his feet, for a unified management control at the same time, the flexibility of the overall wire also greatly enhanced, for the traditional three-and-line, its length can not be any change in the share space larger wire, but Cat cable with soft texture, small size and high flexibility.
For example, three and a common line, such as 1.8 meters in length, 3 meters or 5 meters, if the server from the KVM is not just, it is necessary to buy extra wire length to meet the application environment, but the Cat 5 wire can be free on demand cut into appropriate length, there would be no extra finishing wire is not easy, but also the space occupied by the engine room and the impact of heat and other issues, but also to facilitate routing between different cabinet.
The commonly used terms of KVM Switch
The type of KVM switch Mainly refers to terminal type which it controls, if the terminal is the main controlled computer can be called multi-type computer-controlled. KVM areas has also been extended to serial devices such as hubs, routers, storage devices and UPS and so on. Sophisticated KVM solutions allow multiple users in any location, any time access to thousands of servers and network equipment. Moreover, if the event record, remote power management, multi-level user security permissions management, environmental alert system, Cat5 cable and other functions to help IT managers from any place they want to manage the day-to-day security operations. Makes it easy to access, monitor and manage all of your IT equipment. Known as the all-round management of the data center (Total Data Center Management, TDCM). It is a centralized management of IT equipment can increase the normal operation of the time (because they can reduce the time to visit and diagnosis), significant savings as well as the floor area of unnecessary equipment and manpower, no need to consider the efficiency of the network can access to all equipment, can be the ultimate way to enhance the competitiveness of your business.
Switch input interface is the main parameter, refer to the input of the interface and interface number of ways. There are 4 switches Road, 8, 32 or more input interface, use the BNC connector or composite video interface. However, please note the type of equipment to switch the connection in detail the requirements of the cable. KVM as well-known manufacturers in the product descriptions alone, without the use of Raritan certified cable, the signal quality may lead to lower user satisfaction can not produce the video. Raritan-certified cable can easily be purchased at competitive prices. Using Raritan-certified cable, users can be a resolution of 1024x768 @ 75Hz to send video up to 300 meters away, or to a resolution of 1600x1200 @ 75Hz to send video up to 200 meters away.
Switch output interface means, the output interface mode, generally plugs or BNC composite video interface.
Bandwidth is known as bandwidth, refers to a fixed period of time the volume of information can be transmitted, which is in the transmission pipeline can transmit data. In the digital devices, bandwidth is usually expressed in bps, that is, the median can be transmitted per second. Simulated devices, the bandwidth is usually cycles per second or Hertz sent to show that Hz. Bandwidth of the basic input output system (BIOS) device is particularly important, such as fast disk drive will be affected by low-bandwidth bus obstructed.
Support the resolution refers to the main KVM switch in the control of the machine to which the output signal can be displayed when the resolution is the video window width and height on the number of pixels.
KVM switch means switch is in the conversion from one device to control another device used in switching mode. Products in general through the button, hot-key (hotkey) and the screen to operate the menu.
Switch input interface is the main parameter, refer to the input of the interface and interface number of ways. There are 4 switches Road, 8, 32 or more input interface, use the BNC connector or composite video interface. However, please note the type of equipment to switch the connection in detail the requirements of the cable. KVM as well-known manufacturers in the product descriptions alone, without the use of Raritan certified cable, the signal quality may lead to lower user satisfaction can not produce the video. Raritan-certified cable can easily be purchased at competitive prices. Using Raritan-certified cable, users can be a resolution of 1024x768 @ 75Hz to send video up to 300 meters away, or to a resolution of 1600x1200 @ 75Hz to send video up to 200 meters away.
Switch output interface means, the output interface mode, generally plugs or BNC composite video interface.
Bandwidth is known as bandwidth, refers to a fixed period of time the volume of information can be transmitted, which is in the transmission pipeline can transmit data. In the digital devices, bandwidth is usually expressed in bps, that is, the median can be transmitted per second. Simulated devices, the bandwidth is usually cycles per second or Hertz sent to show that Hz. Bandwidth of the basic input output system (BIOS) device is particularly important, such as fast disk drive will be affected by low-bandwidth bus obstructed.
Support the resolution refers to the main KVM switch in the control of the machine to which the output signal can be displayed when the resolution is the video window width and height on the number of pixels.
KVM switch means switch is in the conversion from one device to control another device used in switching mode. Products in general through the button, hot-key (hotkey) and the screen to operate the menu.
Tuesday, June 23, 2009
What are the KVM Extender's applications?
1.Data centers can be connected to server of the KVM interface, administrators and users through the use of this product to manage and use the server.
2.Enterprise security management application for the development of current technology through the computer's USB host port, floppy disk, serial port, such as to copy the information, resulting in the business of leaking a secret, you can use this product to solve this problem, companies have been able to host computer a safe place on the passage of the products to employees and a KVM switch the interface to use the main computer, you can put an end to such security risks.
3.Video education through the use of this product may be on the remote video education.
4.Current home computer more and more frequency, the computer host radiation, heat and noise getting higher and higher, through the use of this product to other places on the mainframe computer, desktop use of liquid crystal display, the host of the radiation can be avoided , heat and noise.
5.Industrial Control using this product, you can take on the host computer to monitor the location, keyboard and mouse display the location on the clean and comfortable to users.
6.Other applications in the banking, telecommunications, business hall of the securities industry, hotel rooms, through the use of this product to provide users with convenient.
7.Monitoring in industrial monitoring applications, you can use computers to control video camera, focused on the use of master-slave distributed network form a monitoring network program, the program of monitoring and management science, and ease of use, ease of installation and commissioning works, at the same time can reduce the project costs, especially the application of this product can improve the long haul after the camera image quality, at the same time through the cascade to the unit after leading a monitoring point for leadership and management.
8.Application of the program room in the engine room management, administrators and users of the products can be applied to the management and use of servers, due to good image quality of the products, the use of simple and convenient to bring a lot of room to facilitate management.
2.Enterprise security management application for the development of current technology through the computer's USB host port, floppy disk, serial port, such as to copy the information, resulting in the business of leaking a secret, you can use this product to solve this problem, companies have been able to host computer a safe place on the passage of the products to employees and a KVM switch the interface to use the main computer, you can put an end to such security risks.
3.Video education through the use of this product may be on the remote video education.
4.Current home computer more and more frequency, the computer host radiation, heat and noise getting higher and higher, through the use of this product to other places on the mainframe computer, desktop use of liquid crystal display, the host of the radiation can be avoided , heat and noise.
5.Industrial Control using this product, you can take on the host computer to monitor the location, keyboard and mouse display the location on the clean and comfortable to users.
6.Other applications in the banking, telecommunications, business hall of the securities industry, hotel rooms, through the use of this product to provide users with convenient.
7.Monitoring in industrial monitoring applications, you can use computers to control video camera, focused on the use of master-slave distributed network form a monitoring network program, the program of monitoring and management science, and ease of use, ease of installation and commissioning works, at the same time can reduce the project costs, especially the application of this product can improve the long haul after the camera image quality, at the same time through the cascade to the unit after leading a monitoring point for leadership and management.
8.Application of the program room in the engine room management, administrators and users of the products can be applied to the management and use of servers, due to good image quality of the products, the use of simple and convenient to bring a lot of room to facilitate management.
What are KVM's shortcomings ?
KVM's work from the principle, characteristics and scope of application, such as can be seen, in fact, the use of KVM exist some shortcomings:
1.It is not suitable for small Cost-saving room : Taking into account the cost of one or two servers if it is a small room ,it does not need to use KVM, because it is no need to cost additional expenditures; even need a remote to operate, can also remotely through an ordinary landing software;
2. At the same time, centralized management of increased risk management: the current cabinet, the general set of KVM management of the Department of more than 10 machines, assuming a situation of failure in the KVM did not spare the time just to catch up with the back-up or a single set of KVM K, V, M for the replacement operation, at this time in this cabinet has important applications in the server process fails, then the results of the only way - from the failure to start the procedure to replace before the KVM, the server application have been in fault state and found no one. This situation is particularly likely to occur in clusters KVM management, which is not trivial (not to mention the coincidence is not so, I have encountered in their own two, failure to run a server program half an hour and another is another a counter to other servers automatically jump out of more than 20 minutes, until customers over the phone only to discover, at that time for a really depressed);
3. To be designed to improve a number of elements: long-term use of KVM is estimated that there are such friends of the trouble - with a few days suddenly could not recognize KVM or KVM suspended animation, need to re-plug connector; window switching can generally have more than five seconds slowly into the server display the contents of the desktop, for friends do not have the patience to run, every time a switch is equivalent to suffering.
1.It is not suitable for small Cost-saving room : Taking into account the cost of one or two servers if it is a small room ,it does not need to use KVM, because it is no need to cost additional expenditures; even need a remote to operate, can also remotely through an ordinary landing software;
2. At the same time, centralized management of increased risk management: the current cabinet, the general set of KVM management of the Department of more than 10 machines, assuming a situation of failure in the KVM did not spare the time just to catch up with the back-up or a single set of KVM K, V, M for the replacement operation, at this time in this cabinet has important applications in the server process fails, then the results of the only way - from the failure to start the procedure to replace before the KVM, the server application have been in fault state and found no one. This situation is particularly likely to occur in clusters KVM management, which is not trivial (not to mention the coincidence is not so, I have encountered in their own two, failure to run a server program half an hour and another is another a counter to other servers automatically jump out of more than 20 minutes, until customers over the phone only to discover, at that time for a really depressed);
3. To be designed to improve a number of elements: long-term use of KVM is estimated that there are such friends of the trouble - with a few days suddenly could not recognize KVM or KVM suspended animation, need to re-plug connector; window switching can generally have more than five seconds slowly into the server display the contents of the desktop, for friends do not have the patience to run, every time a switch is equivalent to suffering.
The problems of KVM switch procurement
KVM governance in the corporate network play an irreplaceable role, it needs a lot of network equipment for this effort to enhance work efficiency, then in the procurement process which in the end should pay attention to the problem?
1. Compatibility problemsCompatibility of all software and hardware procurement, a crucial factor essential. KVM switch on this point is significantly more important. KVM compatibility convenience in two main considerations, first of all, compatible to Windows, Unix, Linux, Novell, including various types of systems; followed also with a variety of keyboard, mouse, display of hardware compatibility between the keyboard , need to take into account the mouse PS / 2 and USB interface compatibility different.
2. Easy-to-use issuesIntroduced by different vendors KVM operation of the system are different. Therefore, first of all it needs to select when choosing a suitable method of switching, for example, some KVMs are through keyboard hot-key to switch, while others through the OSD menu to switch.
It aslo need a test for the comfort, sensitive and keypad flexible of the KVM, other ease of use is also reflected in whether or not to support hot-swapping, as in the management of the process of increase or decrease in some of the equipment is often a matter.
3. Weak signal problemIn the low-end for KVM, using the cable are directly connected to cable, therefore a direct impact on the quality of the signal transmission, especially in long distance transmission where the cable more stringent requirements.
4. Expansion of KVMExpansion of KVM switche is equally important, because with the development of networks, the need for governance of the host equipment more and more, if the device does not support the existing cascade function, then it means that the need to re-purchase, this will give rise to a lot of cost. The switch supports the cascade, only the host needs to increase the number of upgrades to expand to meet the needing of day-to-day.
KVM development history
(1) First-generation manual KVM:
With the ever-increasing server room and other equipment, cabinets can not accommodate more client operation (keyboard, mouse, display), this time in history to realize the need for a shared client device operation. This time, KVM was born, KVM formerly known as a Sharerthe of mouse, keyboard and monitor。
At this time only the KVM simple manual control panel, and is limited to PS / 2 interface of the server at the same time, only the realization of a single machine boot sequence control, often throwing the mouse, keyboard problems.
(2) The second generation of the Automatic KVM:
Server to replace old ones, there were a lot of special server interface, such as the SUN server, IBM, HP and other minicomputer. This time, ordinary manual KVM has been unable to adapt to the needs of the times.
The emergence of automatic KVM manual KVM solution of many problems, for example, the server supports the USB interface to support the boot at the same time, support for hotkeys / OSD menu control. KVM is mainly due to the increase of the internal CPU chip simulation.
(3) Third-generation digital KVM:
When the room to accommodate a growing number of servers, updating the internal cabinet more types of servers, this time, the original first generation analog stage, the second generation of KVM are unable to adapt to the needs of the engine room. For example, USB's second-generation KVM, only the farthest distance of 5 meters to, PS / 2 support are also the farthest distance to 15 meters. The size of the room now, because through the cabinets and counters placed in a large room can not be achieved simply by a KVM to control the second generation.
With the ever-increasing server room and other equipment, cabinets can not accommodate more client operation (keyboard, mouse, display), this time in history to realize the need for a shared client device operation. This time, KVM was born, KVM formerly known as a Sharerthe of mouse, keyboard and monitor。
At this time only the KVM simple manual control panel, and is limited to PS / 2 interface of the server at the same time, only the realization of a single machine boot sequence control, often throwing the mouse, keyboard problems.
(2) The second generation of the Automatic KVM:
Server to replace old ones, there were a lot of special server interface, such as the SUN server, IBM, HP and other minicomputer. This time, ordinary manual KVM has been unable to adapt to the needs of the times.
The emergence of automatic KVM manual KVM solution of many problems, for example, the server supports the USB interface to support the boot at the same time, support for hotkeys / OSD menu control. KVM is mainly due to the increase of the internal CPU chip simulation.
(3) Third-generation digital KVM:
When the room to accommodate a growing number of servers, updating the internal cabinet more types of servers, this time, the original first generation analog stage, the second generation of KVM are unable to adapt to the needs of the engine room. For example, USB's second-generation KVM, only the farthest distance of 5 meters to, PS / 2 support are also the farthest distance to 15 meters. The size of the room now, because through the cabinets and counters placed in a large room can not be achieved simply by a KVM to control the second generation.
Monday, June 22, 2009
About KVM over IP
Before the birth of the KVM, if the server room 200, then at the same time there will be 200 sets of keyboard, monitor and mouse, investment repeat, am not going to mention the complexity of cable, this may result in the cost of electricity and the increase in air-conditioned, and the birth of KVM No doubt the large and medium-scale servers to resolve user problems.
KVM many types of network connections in accordance with the classification, they could be divided into analogue and digital. One analog KVM support plug-and-play function, no need to install any software or drivers, the deployment of a very simple, remote management has been the engine room without the support of users. Although the convenience of this model, but because of the KVM control signal transmission distance of not more than 200 meters, we can only use in the engine room.
The using of KVM over IP technology, digital KVM, it is through TCP / IP protocol to manage the remote server technology.
Although many years ago can be adopted, such as PC Anywhere remote control software to achieve remote management and service, but in fact, for large-scale deployment of the server users, remote management is not the reality. First of all, because the mode of remote management software on each server need to install the software client, but the administrator can only log on a server and not the true sense of the remote management. KVM over IP and the emergence of the large-scale server deployment and management of long-range into a reality.
KVM over IP technology through the TCP protocol, through LAN and WAN access to the KVM console, and then through the daisy chain topology or star topology on the management server node. Star topology is a traditional KVM connection, usually only a KVM management 16 ~ 32 server nodes. The daisy chain topology is based on the series, and will connect to the server node, so that cable can achieve a high degree of simplification, and breakthroughs in the number of KVM console port restrictions is to disadvantage a single node of a hardware failure may cause other machines can not be managed.
But regardless of the way topology, KVM over IP technology can achieve the true sense of the high-performance remote management. Clearly, the KVM over IP, through the centralized management system, not only in quantity at the same time the management of hundreds or even thousands of servers (currently KVM over IP system supports from 16 to 10,000 of the management server node), and can the management of thousands of kilometers away in the remote management.
More importantly, the combination of KVM server management tools and automatic scanning function, KVM over IP to achieve efficient remote management. Such as the use of IBM Director or HP OpenView, engineers can be on the remote LAN to the dozens of new server operating system to install / security policy configuration, and the work of the past can only be completed by mid-LAN. Maintenance engineers over the past usually only manage about 30 servers through KVM over IP and a combination of management tools, engineers can manage each server is expected to reach 60.
Other two factors promote growing popularity of the KVM
With the expansion of data centers, in order to be able to adapt all of the keyboard, monitor and mouse, the power and space demand increases. Of course, the data center itself is not important each factor, but these factors will be multiplied by the dozens or even hundreds of systems, built up on the considerable consumption, especially for space requirements. In addition KVM cables can cut costs and solve management problem because of the cable .
Market research firm Venture Development Corp. (VDC) group of global asset manager Chris Lanfear is preparing a report on the KVM market, he said: "KVM initial problem to be solved is that the data center if you have 500 servers, then you may have 500 keyboard, 500 display and the mouse 500. KVM is now using the technology that you no longer need a dedicated space. so many of the keyboard, monitor and mouse will also distribute a number of calories, but you do not need to use KVM installation of air-conditioning too much, so less than the number of electricity. "
KVM Internet is to promote technological development of another important driving force. Over the past 10 years combined with the IP remote KVM operation to bring a new lease on life. A San Francisco-based company can operate the data center in Singapore, you can manage from anywhere "lights out" (ie no duty) data center. IP-based KVM (KVM over IP) not only has more capacity to deal with outstanding issues, but also to provide a higher level of monitoring and preventive maintenance functions.
Flexible application of KVM technology enables IT departments to create greater efficiency. Imagine a company in the distant branches in different places (such as banks, hotels or car parts store, etc.) There are several servers. Apparently it was unlikely to be trained or those who have time to deal with IT issues. Traditional approach is to send an IT technical staff over the past or an expert employed at the local, or branch of technology forced most of the people by telephone in accordance with instructions to solve the problem. Of course, these options are far from satisfactory, and KVM solutions for the IT technical staff can feel like dealing with problems.
KVM companies and KVM security
KVM's leading manufacturers of Rose, Avocent, Belkin, Raritan, the CCC Network Systems (CCC Network Systems) and other companies.
There are a various of KVM switch products , from family-oriented use of equipment to be able to operate from several sites of thousands of PC servers and enterprise-class switches, therefore, IS (information systems) departments should know how to use products who wish to invest in KVM products, and have a clear concept about using what channels the migration and other issues , then decide what types of products purchased.
There are a various of KVM switch products , from family-oriented use of equipment to be able to operate from several sites of thousands of PC servers and enterprise-class switches, therefore, IS (information systems) departments should know how to use products who wish to invest in KVM products, and have a clear concept about using what channels the migration and other issues , then decide what types of products purchased.
In addition, enterprises should also be concerned about the various characteristics of KVM products. For example, some products can use the "hotkey" to switch between the customer premises equipment, if you are very focused on speed, this product is very convenient. At the same time, the user should consider display quality of the control equipment when they use . Indoor KVM cable systems and through a special PS / 2 interface connected.
There is no doubt that people are most concerned about is the IP-KVM-based security issues, KVM's fundamental purpose - the promotion of the server and PC remote control technology - suggesting a huge security risk. If the system is designed to establish a KVM remote operation, then naturally there is a risk. Enterprises should establish a critical concept: the implementation of IP-based KVM must not mean the issue of security.
KVM FAQ (1)
Question 1: Why should we use the KVM switch?
Answer 1: KVM switch is a keyboard / screen / mouse (KEYBOARD / VGA / MOUSE) switch. Provide your own desktop with a group of keyboard / screen / mouse, since the central control panel (CONSOL) to operate multiple computers, and can be controlled by up to 128 series computer, just a simple choice panel keys or hotkey (HOT KEY), or a clear window screen user interface, password security settings fingertips allows you to smooth the effective management of all computer systems.
Question 2: the type of KVM switch
Answer 2: Equipment Design: Mechanical and electronicInstallation: desktop and rack-mount
Question 3: What is the KVM switch?Answer 3: KVM switches are a number of obvious benefits, when you have two or more hosts or server computers, and you will be through a keyboard \ mouse \ display to control and operate the host, you can imagine, be able to do so much money and then the keyboard \ mouse \ display, you can manage more than one central control computer, without troubling user from a workstation to another .
In addition, it can save air-conditioning and energy consumption; saving rack, furniture costs; and floor space.
Question 4: KVM switch to meet my applications?
Answer 4: KVM switch is usually applied to one or more administrators to manage more than one computer environment, or a user must be 2 or more computers operating environment, including network operation centers, information centers, server rooms, software development, testing laboratories, service centers, departments, local area network and desktop installation of multiple computers at the same time.
In line with your mode of operation of the KVM switch can provide value-added productivity, far exceeding the space-saving hardware and furniture.However, unless you have chosen to determine the "solution" will not lead to new problems, do not believe that all of the guarantee, look for the operation of your needs and match, and easily and economically expand, upgrade and re-configured KVM switch, select the combination of hardware regardless of what you can carry out the work of a perfect switch.
Question 5: You can control what type of computer?
Answer 5: When you configure a computer growing may be required in your KVM switch to use a different mix of hardware and software platform.Choice can be compatible with all system solutions, for example, whether to find a hardware, operating system and application software is available to the KVM switch, whether you are using a personal computer, Sun, Macintosh, Digital Alpha , RS/6000, HP9000, SGI, Serial ASCII devices or USB computers, running any operating system, including Windows, Windows / NT, Novell, UNIX or LINUX.
Question 6: I would like to ask how the compatibility of products?
Answer 6: KVM switches can support a variety of popular serial mouse. With the IBM RS6000, ALPHA, COMPAQ, DEC, DELL, HP, IBM Server and other high-end servers, personal computers and portable computers with access to use.
Question 7: I am connected to the computer which has been in operation, there may be a problem?
Answer 7: Many users do not know the keyboard, screen and mouse between the number of "standard" exists, if you choose a poor design, a variety of devices can not support the KVM switch to replace the keyboard and mouse, you may compatibility issues will occur.
Keyboard and mouse I / O interface circuit with time, only to "real-time" operation of the intelligent simulation model to meet this demand, this demand can not meet the KVM switch to generate the most common problem is that will lead to the keyboard / mouse lock death, so that your operations interrupted because of the loss is not expensive. Focus on the provision of KVM switch can reset function of the mouse "convenience."
Since many of the operating system will continue to check the keyboard or mouse connection, make sure that the choice of KVM switch with a dedicated processor that provides every computer connected to the keyboard and mouse emulation, not many computers to share a processor.
As long as the exclusive use of simulation, you can complete the simulation of the wisdom of the three keyboard scan code (1,2 and 3) and supports a variety of mouse (including the Microsoft IntelliMouse) of the KVM switch, you can avoid all of the keyboard / mouse problem.
Question 8: My KVM switch will affect the video quality?
Answer 8: Make sure the choice will support your graphics card to the highest resolution video of the KVM switch, the quality of a good KVM switch allows you to maintain up to 1920 * 1440 resolution of the outstanding video quality. Use for your KVM switch cables are designed to maintain the highest video quality, even if the user is located a few hundred meters outside the console.
Answer 1: KVM switch is a keyboard / screen / mouse (KEYBOARD / VGA / MOUSE) switch. Provide your own desktop with a group of keyboard / screen / mouse, since the central control panel (CONSOL) to operate multiple computers, and can be controlled by up to 128 series computer, just a simple choice panel keys or hotkey (HOT KEY), or a clear window screen user interface, password security settings fingertips allows you to smooth the effective management of all computer systems.
Question 2: the type of KVM switch
Answer 2: Equipment Design: Mechanical and electronicInstallation: desktop and rack-mount
Question 3: What is the KVM switch?Answer 3: KVM switches are a number of obvious benefits, when you have two or more hosts or server computers, and you will be through a keyboard \ mouse \ display to control and operate the host, you can imagine, be able to do so much money and then the keyboard \ mouse \ display, you can manage more than one central control computer, without troubling user from a workstation to another .
In addition, it can save air-conditioning and energy consumption; saving rack, furniture costs; and floor space.
Question 4: KVM switch to meet my applications?
Answer 4: KVM switch is usually applied to one or more administrators to manage more than one computer environment, or a user must be 2 or more computers operating environment, including network operation centers, information centers, server rooms, software development, testing laboratories, service centers, departments, local area network and desktop installation of multiple computers at the same time.
In line with your mode of operation of the KVM switch can provide value-added productivity, far exceeding the space-saving hardware and furniture.However, unless you have chosen to determine the "solution" will not lead to new problems, do not believe that all of the guarantee, look for the operation of your needs and match, and easily and economically expand, upgrade and re-configured KVM switch, select the combination of hardware regardless of what you can carry out the work of a perfect switch.
Question 5: You can control what type of computer?
Answer 5: When you configure a computer growing may be required in your KVM switch to use a different mix of hardware and software platform.Choice can be compatible with all system solutions, for example, whether to find a hardware, operating system and application software is available to the KVM switch, whether you are using a personal computer, Sun, Macintosh, Digital Alpha , RS/6000, HP9000, SGI, Serial ASCII devices or USB computers, running any operating system, including Windows, Windows / NT, Novell, UNIX or LINUX.
Question 6: I would like to ask how the compatibility of products?
Answer 6: KVM switches can support a variety of popular serial mouse. With the IBM RS6000, ALPHA, COMPAQ, DEC, DELL, HP, IBM Server and other high-end servers, personal computers and portable computers with access to use.
Question 7: I am connected to the computer which has been in operation, there may be a problem?
Answer 7: Many users do not know the keyboard, screen and mouse between the number of "standard" exists, if you choose a poor design, a variety of devices can not support the KVM switch to replace the keyboard and mouse, you may compatibility issues will occur.
Keyboard and mouse I / O interface circuit with time, only to "real-time" operation of the intelligent simulation model to meet this demand, this demand can not meet the KVM switch to generate the most common problem is that will lead to the keyboard / mouse lock death, so that your operations interrupted because of the loss is not expensive. Focus on the provision of KVM switch can reset function of the mouse "convenience."
Since many of the operating system will continue to check the keyboard or mouse connection, make sure that the choice of KVM switch with a dedicated processor that provides every computer connected to the keyboard and mouse emulation, not many computers to share a processor.
As long as the exclusive use of simulation, you can complete the simulation of the wisdom of the three keyboard scan code (1,2 and 3) and supports a variety of mouse (including the Microsoft IntelliMouse) of the KVM switch, you can avoid all of the keyboard / mouse problem.
Question 8: My KVM switch will affect the video quality?
Answer 8: Make sure the choice will support your graphics card to the highest resolution video of the KVM switch, the quality of a good KVM switch allows you to maintain up to 1920 * 1440 resolution of the outstanding video quality. Use for your KVM switch cables are designed to maintain the highest video quality, even if the user is located a few hundred meters outside the console.
What is the difference of cat5, cat5e and cat 6 cable?
Cat5, cat5e and cat 6 cable, what is the differenceof them? what applications I use may change any of the above decision of a cable?
Cat 5 cable does not exist any more, it has been replaced by Cat 5e. However, there is a new Cat 6 cable to support 10GBASE-T (twisted pair of 10GB in the transmission fiber than in much cheaper).
There is also a Cat 7/class F cable has been since 2002 as a standard cable. What kind of cable to choose depends entirely on your specific needs, however, no one believes that Cat 5e is a long-term solution. You are the biggest problem for the wiring of these cables to be installed on the walls of the use of 10 to 15 years, or to support the 3rd generation to 4 generations of electronic products.
Therefore, the biggest problem is that how long you can live in your building . The cost of each level is different, if these lines must be replaced, the labor cost is very expensive. If you are planning to increase your network to 10G features in the wiring time(some companies even use the wiring 10 to 15 years),you need a 10G solution.
The copper's prices continue to rise,it is a very importment thing that should be pointed out. Therefore, in addition to worry about high labor costs and replacement of the lower performance solutions, if copper,s prices continue to rise , the cost of replacement of components may be higher.
Cat 5 cable does not exist any more, it has been replaced by Cat 5e. However, there is a new Cat 6 cable to support 10GBASE-T (twisted pair of 10GB in the transmission fiber than in much cheaper).
There is also a Cat 7/class F cable has been since 2002 as a standard cable. What kind of cable to choose depends entirely on your specific needs, however, no one believes that Cat 5e is a long-term solution. You are the biggest problem for the wiring of these cables to be installed on the walls of the use of 10 to 15 years, or to support the 3rd generation to 4 generations of electronic products.
Therefore, the biggest problem is that how long you can live in your building . The cost of each level is different, if these lines must be replaced, the labor cost is very expensive. If you are planning to increase your network to 10G features in the wiring time(some companies even use the wiring 10 to 15 years),you need a 10G solution.
The copper's prices continue to rise,it is a very importment thing that should be pointed out. Therefore, in addition to worry about high labor costs and replacement of the lower performance solutions, if copper,s prices continue to rise , the cost of replacement of components may be higher.
Sunday, June 21, 2009
KVM switch
KVM switch
The KVM, is the Keyboard, Video, Mouse acronym, the name of a formal multi-computer switch. In shortly, is a set of keyboard, monitor and mouse to control 2, 4, 8, 16 or even more than 4096 mainframe computer.
Mainly refers to the type of KVM switch under the control of the terminal type, if the terminal is the main control computer can be called multi-type computer-controlled. KVM areas has also been extended to serial devices such as hubs, routers, storage devices and UPS and so on. Sophisticated KVM solutions allow multiple users in any location, any time access to thousands of servers and network equipment.
Moreover, the event record, remote power management, multi-level user security permissions management, environmental alert system, Cat5 cable and other functions to help IT managers from any place they want to manage the day-to-day security operations.
Easy to access, monitor and manage all of your IT equipment. Known as the all-round management of the data center (Total Data Center Management, TDCM). It is a centralized management of IT equipment can increase the normal operation of the time (because they can reduce the time to visit and diagnosis), significant savings as well as the floor area of unnecessary equipment and manpower, no need to consider the efficiency of the network can access to all equipment, can be the ultimate way to enhance business competitiveness.
The KVM, is the Keyboard, Video, Mouse acronym, the name of a formal multi-computer switch. In shortly, is a set of keyboard, monitor and mouse to control 2, 4, 8, 16 or even more than 4096 mainframe computer.
Mainly refers to the type of KVM switch under the control of the terminal type, if the terminal is the main control computer can be called multi-type computer-controlled. KVM areas has also been extended to serial devices such as hubs, routers, storage devices and UPS and so on. Sophisticated KVM solutions allow multiple users in any location, any time access to thousands of servers and network equipment.
Moreover, the event record, remote power management, multi-level user security permissions management, environmental alert system, Cat5 cable and other functions to help IT managers from any place they want to manage the day-to-day security operations.
Easy to access, monitor and manage all of your IT equipment. Known as the all-round management of the data center (Total Data Center Management, TDCM). It is a centralized management of IT equipment can increase the normal operation of the time (because they can reduce the time to visit and diagnosis), significant savings as well as the floor area of unnecessary equipment and manpower, no need to consider the efficiency of the network can access to all equipment, can be the ultimate way to enhance business competitiveness.
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