What do you mean by server virtualization

What do you mean by server virtualization? Explain example?
ANS:-  Server virtualization is the partitioning of   physical server into smaller virtual server.

In server virtualization the resources of the server itself are hidden from users.In which a s/w is use to divide the physical server into virtual environment called virtual or physical server. one common usage of this tech. is in web server. Server virtualization is also known as system virtualization .The s/w providing the virtualization is call VMM(virtual m/c monitor)or hypervisor. A hypervisor can run on bare h/w(native vm)or on to of an operating system(hosted vm)
Fig:- server virtualization model.

server virtualization can also be define as partitioning of a single physical m/c into multiple execution environment each of which can host a different server. This type of virtualization is also known as consolidation.
Fig:- server virtualization view

ADVANTAGE
1.       Flexibility for non-disruptive migration.

2.       Ease of management

3.       Reduced cost.

4.       High availability.

5.       Disaster Recovery.

6.       Efficient Utilization




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