Administrator Guide

Live Volume Before Swap Role
In the following diagram, the primary Storage Center is on the left and the secondary Storage Center is on the right.
Figure 74. Example Live Volume Conguration
1. Server 2. Server IO request to primary volume over Fibre Channel
or iSCSI
3. Primary volume 4. Live Volume replication over Fibre Channel or iSCSI
5. Secondary volume 6. Server IO request to secondary volume (forwarded to
primary Storage Center by secondary Storage Center)
7. Server
Live Volume After Swap Role
In the following diagram, a role swap has occurred so the secondary Storage Center is on the left and the primary Storage Center is
on the right.
Figure 75. Example Live Volume Conguration After Swap Role
1.
Server 2. Server IO request to secondary volume (forwarded to
primary Storage Center by secondary Storage Center)
3. Secondary volume 4. Live Volume replication over Fibre Channel or iSCSI
5. Primary volume 6. Server IO request to primary volume over Fibre Channel
or iSCSI
7. Server
Storage Center Replications and Live Volumes
693