Administrator Guide

Table Of Contents
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 10. Example Live Volume Configuration
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 11. Example Live Volume Configuration 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
228 Storage Center Replications and Live Volumes