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.