HP StoreOnce Backup System Concepts and Configuration Guidelines (BB877-90913, November 2013)

What happens if a fabric fails?
If Fabric 1 fails in the previous configuration, all VTL libraries and nodes on the HP B6200 Backup
System still have access to Fabric 2. As long as Hosts A, B and C also have access to Fabric 2,
then all backup devices are still available to Hosts A, B and C. The following diagram illustrates
existing good paths after a fabric fails.
Figure 29 Complex configuration with ports of different VTLs being presented to different fabrics,
Fabric 1 fails
Similarly, if Fabric 2 failed, all VTL libraries and nodes on the HP B6200 Backup System would
still have access to Fabric 1. As long as Hosts D, E and F also have access to Fabric 1, then all
backup devices are still available to Hosts D, E and F. The following diagram illustrates good
existing paths after Fabric 2 fails.
Scenario 3, dual fabric with dual switches, recommended 55