You can use Thin Image Advanced to overwrite snapshot data in pools to P-VOLs so that the P-VOL content is returned to the condition it was when you stored snapshot data. For example, when a logical data failure occurs in the P-VOL, you can restore the P-VOL content to its normal state as of before the snapshot data is stored. Overwriting snapshot data to P-VOLs is also referred to as restoring Thin Image Advanced pairs.
You restore a Thin Image Advanced pair using the raidcom modify snapshot command in CCI with specifying the -snapshot_data restore option. After the pair restore operation is complete, the status of the Thin Image Advanced pair is changed to RCPY/COPY(RS-R), and then PSUS.
After the Thin Image Advanced pair is restored, data in the secondary volume becomes available. For example, if a logical failure occurs again in the restored data, you can use the data in the secondary volume to restore the pair again. Note that you cannot restore pairs in PSUE status.