Snapshot
A point-in-time copy of a VM or disk used for quick rollback or backup.
A snapshot captures a VM or disk’s state at a point in time for fast rollback after a bad patch or change. It is not a true backup — it usually shares storage with the primary, so it shares fate in a hardware failure or ransomware event. Immutable, off-host snapshots resist tampering and help bridge the gap toward real backups.
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