snapshot

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snapshot

an informal photograph taken with a simple camera

snapshot

[′snap‚shät]
(computer science)
The storing of the entire contents of the memory, including status indicators and hardware registers.

snapshot

(1) A saved copy of the current memory state, along with the contents of all hardware registers and status indicators. It is periodically taken in order to restore the system in the event of failure. See checkpoint/restart.

(2) A saved copy of a file before it is updated. Part of a storage management program, snapshots enable previous versions of files to be brought back for review or to be placed back into use. See shadow copy.