Administrator Guide

Step 5B: The Activated DR Volume is Deactivated
After the replication from the activated DR volume to the original source volume is synchronized, Storage Manager prompts the
administrator to halt IO to the secondary volume.
NOTE: IO must be halted before the destination volume is deactivated because the deactivation process unmaps the
volume from the server.
Figure 87. DR-Activated Volume is Deactivated
1. Source volume being recovered 2. Replication over Fibre Channel or iSCSI
3. Destination volume (activated) 4. Server mapping to activated DR volume (IO halted)
5. Server at source site (not mapped) 6. Server at DR site
Step 5C: The Source Volume is Activated
Storage Manager prompts the administrator to deactivate and unmap the destination volume. The source volume resumes
replicating to the destination volume, and the source volume is activated and mapped to the server at the source site.
Figure 88. Recovered Source Volume is Activated
1.
Recovered and activated source volume 2. Replication over Fibre Channel or iSCSI
3. Destination volume (deactivated) 4. Server at source site mapped to recovered and activated
source volume
5. Server mapping removed from destination volume 6. Server at source site
7. Server at DR site
Disaster Recovery Administration Options
Use Storage Manager to prepare for DR, activate DR, and restore failed volumes. To make sure that a site outage does not prevent
you from accessing Storage Manager to perform DR operations, you can optionally install a remote Data Collector at a DR site.
A remote Data Collector provides access to Storage Manager DR options when the primary Data Collector is unavailable. In the
event that the primary Data Collector is unavailable, use a locally installed Client to connect to the remote Data Collector.
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Storage Center DR Preparation and Activation