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.