What is a restore

A restore is the procedure you perform to replace a working copy of a file or collection of files to a computer's hard disks in the event that they are lost or destroyed. You often perform a restore for no reason other than to return files to a former state (such as when a file is mangled, truncated, corrupted, or infected with a virus).

Restore management is crucial in the DR process. If you lose a hard disk or the entire machine (for example, it is trashed, stolen, lost, or fried in a fire), you need to rebuild the machine and have it running in almost the same state (if not exactly) that its predecessor was in at the time of the loss. How you manage your DR process determines how much downtime you experience or the missing generation of information between the last backup and the disaster— a period we call void recovery time.

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