September 2012
Intermediate to advanced
1680 pages
88h 3m
English
Snapshots are commonly used in business environments for the purpose of fault tolerance or disaster recovery. A well-timed snapshot right before a system failure can help an organization roll back their server to the point right before the server failed or problem occurred. Instead of waiting hours to restore a server from tape, the activation of a snapshot image is nothing more than choosing the snapshot and selecting to start the guest image. When the guest image starts up, it is in the state that the image was at the time the snapshot was created.
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