Administrator Guide

Table Of Contents
NOTE: To restore a volume to an alternate site, consult with technical support (see https://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.
Restoring a Live Volume and a Managed Replication
After a failover of a Live Volume with a Managed Replication, Unisphere Central 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 affected 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 a Failed Volume Restore Point
Use the Restore Points tab in the Disaster Recovery view to activate a disaster recovery.
Steps
1.
Click the
HOME menu.
The Unisphere Central Home page is displayed.
If a Storage Center is selected from the drop-down list in Unisphere Central, click (Home).
2.
From the Data Mobility menu, click Disaster Recovery.
The Disaster Recovery view opens to the Restore Points tab.
3. Filter the restore points displayed using the Filters pane:
a. Select Ready To be Restored/Restarted from the Display menu.
b. Select or clear the check boxes next to the Storage Centers in the list to show the restore points of interest.
4. Select one or more degraded or failed restore points from the list.
5. Click Restore/Restart.
The Restore/Restart wizard opens.
6. Review the Restore Warnings and click Next.
7. Select the restore point that you want to modify, then click Edit Restore Settings. The Edit Restore Settings dialog box
opens.
8. Choose a recovery method:
If the Recover Live Volume check box is available, select it to repair the Live Volume by reestablishing connectivity
between the original source volume and activated volume. This option must be selected to preserve volume identity. If
the Live Volume manages a replication, this option must be selected to preserve the managed replication. When selected,
the New Source Volume Settings and Replication Settings are not available because the existing Live Volume
settings are used
If the Recover Live Volume check box is not available or not selected, the Live Volume is recreated using the New
Source Volume Settings and Replication Settings you specify. Volume identity is lost, and if the Live Volume
manages a replication, the managed replication is removed.
9. (Replication only) If a source volume is being restored:
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Storage Center DR Preparation and Activation