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Cloud Elasticity

Cloud servers that are virtualized have other advantages to boot. In addition to being able to be scaled, they are portable.

The portable nature of cloud servers comes from the style that their storage takes. In the case of most virtual machines, the storage for them are written to hard drive files on disk, which allows them to be easily backed up, allocated per virtual machine, and so on.

The added benefit here is that each file can be treated as one would normally treat a file: it can be moved, renamed, or copied. This is an extremely useful thing since a copy of an existing virtual machine can give you an identical clone of an existing server.

Many cloud providers offer the ability to clone a server from an existing one using this method. This means that if you are aware of an incoming period of excessive usage, you can take advantage of this feature, clone your machine, and set this up to work as a clustered partner with your existing server.


  

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