Restore a LUN From a Clone LUN

You can restore a LUN to its state when the Clone LUN was created.

Important! Before restoring a Clone LUN remove all mappings from the SAN hosts. If you choose not to remove these LUN mappings, ensure that the source LUN is not used during the Clone LUN restoration process.

Restoring a LUN from a Clone LUN results in returning the LUN to the exact point‑in‑time image of the clone, plus any changes made to the clone. This method quickly restores the data online, especially when compared to copying the entire data set back from a tape backup. Furthermore, restoring from the clone allows access to the data while the restore is in progress.

You might want to restore a Clone LUN if the following scenarios apply:

Some undesirable changes to the data were made.
An external client application or virus corrupted the LUN.

Navigate to SAN > Storage > LUNs.
Select the Clone LUN that you want to restore.
Note: The restoration process resets the creation date of the LUN to that of the selected Clone LUN.
Select Actions > Restore from Clone.
Click OK.

The system restores the LUN, during which time system performance might be slightly degraded. The system starts a task in the background to perform the restore operation. When the background task completes, the system writes an event to the event log and removes the “In Progress” status from the LUN overview page.