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 67. 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 68. Replication When DR is Activated

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

568 Storage Center DR Preparation and Activation