Snapshot
The snapshot preset creates a point-in-time view of the production data. The snapshot is not intended to be an independent copy but is used to maintain a view of the production data at the time the snapshot is created. Therefore, the snapshot holds only the data from regions of the production volume that changed since the snapshot was created. Since the snapshot preset uses thin provisioning, only the capacity that is required for the changes is used.
You can use the snapshot preset for backup solutions where many recovery points must be maintained to allow recovery from lost or corrupted production data. In this situation, you can create many snapshots of the production data, one for each needed recovery point. You can then restore the production volume to any of the recovery points by using the snapshots at any time.