Administrator Guide

Activate Disaster Recovery for Multiple Restore Points
If a pair of Storage Centers host multiple replications and/or Live Volumes, disaster recovery can be activated for all of the corresponding
restore points simultaneously.
Prerequisites
Save and validate restore points.
Steps
1. Click the Replications & Live Volumes view.
2. Click the Restore Points tab, then click Activate Disaster Recovery. The Activate Disaster Recovery wizard appears.
3. Select the source/destination Storage Center pair for which you want to activate DR, then click Next. The wizard advances to the
next page.
4. Choose whether you want to allow planned DR activation.
a) (Optional, replication only) To allow DR to be activated while the replication is functioning normally, select the Allow Planned
Activate Disaster Recoveries check box.
b) Click Next. The wizard advances to the next page.
5. In the Available Restore Points pane, select the restore points that you want to activate, then click Next. The wizard advances to
the next page.
6. Configure DR settings for each restore point.
a) Select the restore point that you want to modify, then click Edit Settings. The Activate Disaster Recovery dialog box appears.
If the restore point corresponds to a synchronous replication, the dialog box displays additional information about the state of the
replication:
• The Sync Data Status field displays the synchronization status for the replication at the time the restore point was validated.
• A recommendation about whether the destination volume is currently synchronized with the source volume is displayed below
the Sync Data Status field in green or yellow text.
NOTE:
For high consistency mode synchronous replications that are current, the Use Active Snapshot check box
is automatically selected.
Figure 64. Activate Disaster Recovery Dialog Box
b) (Live Volume, Storage Center 6.5 and later only) Select the Preserve Live Volume check box to direct IO requests to the
secondary volume without deleting the Live Volume. If the Live Volume manages a replication, Preserve Live Volume must be
selected to preserve the managed replication later in the restore process.
• If Preserve Live Volume is selected, Storage Center directs IO requests to the secondary volume by promoting it to primary.
The Live Volume is not deleted and may be repaired when the original primary Storage Center comes back online. Volume
identity is preserved so that administrator intervention is not required on the servers mapped to the volume. If a replication is
managed by the Live Volume, it moves to follow the newly promoted primary volume. Fewer volume settings are available
because the existing Live Volume settings are used.
• If Preserve Live Volume is not selected, Storage Manager deletes the Live Volume, creates a view volume, and maps it to a
server. During the restore process, the Live Volume is recreated. If a replication is managed by the Live Volume, the managed
replication is removed later during the restore process.
520
Storage Center DR Preparation and Activation