Administrator Guide
Restoring Replications and Live Volumes
A replication source volume or Live Volume primary volume can be restored from a replication destination volume or Live Volume
secondary volume. Restoring a volume is necessary when it has been deleted or DR has been activated and data has been written to
the activated volume.
Volume Restore Options
The options to restore a volume dier depending on whether DR was activated.
• Recover from a destination volume that was not activated: If a source volume no longer exists, Storage Manager restores the
data from the destination volume by replicating it back to a newly created source volume. Once the replication is complete,
Storage Manager maps the new source volume to a selected server and restarts the replication back from the source system to
the destination system.
• Recover from a destination volume that was activated: Storage Manager recovers data from the destination volume, including
all new writes to the volume after it has been activated, to the original source volume. If the original source volume is no longer
there it will be re-created. Once the restore is complete, Storage Manager maps the source volume to the selected server and
restarts the replication from the source volume to the destination volume.
NOTE: To restore a volume to an alternate site, consult with Dell Technical Support (see www.dell.com/support).
Volume Restore Limitations
The following limitations apply to the volume restore process.
• Restoring a volume removes replications that use it as a source volume.
• Restoring an original primary Live Volume volume using a managed replication removes the associated Live Volume.
Related links
Replicating a Single Volume to Multiple Destinations
Managed Replications for Live Volumes
Restoring a Live Volume and a Managed Replication
After a failover of a Live Volume with a Managed Replication, Storage Manager creates a new managed replication for the secondary
Live Volume. When the original primary Live Volume system is brought back online and the Live Volume is not restored, there will be
two managed replications for the Live Volume. Restoring the Live Volume will delete the managed replications on the original primary
Live Volume and keep the Managed Replication on the secondary Live Volume. Swapping the roles of the Live Volume will recreate
the managed replication on the original primary Live Volume and delete the Managed Replication on the secondary Live Volume.
Volume Restore Procedures
If DR was activated for multiple replications and/or Live Volumes hosted by a Storage Center pair, the aected volumes can be
restored in a single operation. If DR was activated for a single volume, use the corresponding restore point to restore it.
Restore Failed Volumes for Multiple Restore Points
If multiple volumes hosted by a Storage Center pair failed, you can restore them simultaneously.
1. Click the Replications & Live Volumes view.
2. Click the Restore Points tab, then click Restore/Restart DR Volumes. The Restore/Restart DR Volumes wizard appears.
3. Select the source/destination Storage Center pair for which you want to restore failed volumes, then click Next. The wizard
advances to the next page.
4. Read the Restart Warning and Recovery Warning text, modify any settings that are displayed as necessary, then click Next.
The wizard advances to the next page.
5. In the Available Restore Points pane, select the restore points for which you want to restore volumes, then click Next. The
wizard advances to the next page.
Storage Center DR Preparation and Activation
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