Virtualization is the most talked about topic these days. Why? Because it proved itself the best to downsize cost and space requirements in a data centres. Vendors are working on easy and efficient management of virtual infrastructures in a data center, which includes recovery, backup, migration of virtual machines, ete.

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Another technology that is becoming common in the arena of data center is cloud computing, which, in other words can be stated as a virtual data center. This can be better explained as the entire IT infrastructure becoming available to you as a service. For example if you need I TB of storage then you can request the same space from the cloud which is a hosted data center by XYZ. If you you require more than 500 GB, then you just need to upgrade your infrastructure virtually which takes a couple of minutes.