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.