Administrator Guide

Table Of Contents
Disaster Recovery Activation Limitations
Activating DR for a replication removes any replications that use the activated volume (original destination/secondary volume)
as the source volume.
Planned vs Unplanned Disaster Recovery Activation
During disaster recovery activation, you may choose whether you want to allow planned DR activation. The following table
displays some of the differences between planned and unplanned DR activation.
Planned DR Activation Unplanned DR Activation
The servers on the production site are shut down. The servers on the production site are not shut down.
The Storage Centers on the production site do not have to be
shut down.
The Storage Centers on the production site are shut down.
The source volume is no longer mapped to the server. The source volume is still mapped to the production servers.
You can copy any remaining data prior to activation,
eliminating data loss.
Data may be lost, depending on the recovery point objective
(RPO).
The production site will not come back online while service
has switched to the DR site.
The production Storage Centers and the servers may come
back online, creating the danger of a split brain.
Disaster Recovery Activation Procedures
If an entire site becomes unavailable, DR can be activated for all affected volumes in a single operation. If a single volume
becomes unavailable, activate DR for the corresponding restore point.
Activate Disaster Recovery
Use the Restore Points tab in the Disaster Recovery view to activate a disaster recovery.
Prerequisites
Save and validate restore points.
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 Activated 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 restore points from the list.
5. Click Activate.
The Activate wizard opens.
6. Review the information on the Activation Warnings page of the wizard and click Next.
7. Configure disaster recovery settings for each restore point.
a. Select the restore point that you want to modify, then click Edit Activation Settings. The Edit Activation Settings
dialog box opens.
b. Modify the recovery volume settings as needed, then click OK. These attributes are described in the online help.
8. Click Next.
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Storage Center DR Preparation and Activation