Data virtualization is the process of store data in virtual store. Virtual storage can be replicated and transferred to another location. Storage virtualization is very important for disaster recovery.
The main advantages of desktop virtualization is that user do not need to bring their work computer everywhere, they can work and access all their personal files, application and documents from anywhere. It allows a central administrator to deploy simulated desktop environments to hundreds of physical computer at once.
Server virtualization consolidates multiple operation systems on a single server. It reduces costs because less hardware is required and save operation costs in hardware maintenance.