Recovering Data from a Cloned Volume

Cloned volumes provide added security because they allow you to recover your data in case the original volumes become damaged or destroyed.

During a restore operation, ISM is configured to request the original source volume. However, if you know that the original volume is unavailable (perhaps it is stored off-site), you can force ISM to request a cloned volume.

To force ISM to request a cloned volume

Use the ism_rm -volume command to delete the original storage volume.
Alternatively, change the Restore status for each save set on the original volume to Disabled:
```
ism_config -volume name -disable_restore ssid
```
To obtain a list of the ssid numbers, issue the ism_show -volume name command.
Use ism_catalog to recover unexpired save sets.
If the save sets on the cloned volume have expired, follow the instructions in Re-Creating the ISM Catalog Before You Use ON-Bar to re-create the ISM catalog.
Use ON–Bar to restore the data.

When you delete the original volume from the ISM catalog or change the Restore status for each save set on the original volume to Disabled, ISM knows that the original volume is unavailable for the restore operation and requests the cloned volume instead.