Administrator Guide

Step 2: The Source Site Goes Down
When the source site goes down, the data on the source volume can no longer be accessed directly. However, the data has been
replicated to the destination volume.
Figure 83. Replication When the Source Site Goes Down
1. Source volume (down) 2. Replication over Fibre Channel or iSCSI (down)
3. Destination volume 4. Server mapping to source volume (down)
5. Server mapped to the source volume (down)
Step 3: An Administrator Activates Disaster Recovery
An administrator activates DR to make the data in the destination volume accessible. When DR is activated, Storage Manager brings
the destination volume on line and maps it to a server at the DR site. The server sends IO to the activated DR volume for the
duration of the source site outage.
Figure 84. Replication When DR is Activated
1.
Source volume (down) 2. Replication over Fibre Channel or iSCSI (down)
3. Destination volume (activated) 4. Server mapping to source volume (down)
5. Server mapping to activated DR volume 6. Server at source site
7. Server at DR site
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Storage Center DR Preparation and Activation