By doing this we can minimize physical servers . i.e., instead of having one server running in one operating system with the help of server virtualization we can have one physical server which has many virtual servers which acts as an individual operating system. The drawback of using conventional server is that many resources are not utilized in a proper ways and will be in idle state waiting for the other job to be finished. Having server virtualization implemented within an organization we will eliminate this problem by understanding the disk usage, Memory consumption. The application performance with respect to its Input and Output is usually done with the time required by the operating system. The operation of OS like read and write helps us to estimate resource and s system the performance of any resource. Another important factor related to operating system is response time of the service processing the application requests. Since all these factors have a tendency to change its behaviour anytime in the real environment, it will be necessary for one to monitor factors like performance and efficiency of servers. For this analysis we will take help of simulation of server virtualization to calculate the workload of a resource and s system. .Three types of server virtualization exists, they are OS-level virtualization, Full virtualization and Para virtualization. Usually in server virtualization the physical servers are called as host of the server and virtual servers are called guests. .