A snapshot is a virtual image of the entire file system. You can create snapshots of a parent file system on demand. Physically, it contains only data that corresponds to the changes that are made in the parent, and so consumes significantly less space than a detachable full mirror.
You cannot create a snapshot of a scale-out file system.
Snapshots are used to recover from data corruption. If files, or an entire file system, are deleted or become corrupted, you can replace them from the latest uncorrupted snapshot. You can mount a snapshot and export it as if it were a complete file system. Users can then recover their own deleted or corrupted files. You can limit the space snapshots consume by setting a quota on them. If the total space that snapshots consume exceeds the quota, Veritas Access rejects attempts to create additional ones.
You can create a snapshot by either using the snapshot create command or by creating a schedule to create the snapshot at a specified time.
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