HP StorageWorks 2000 Modular Smart Array Reference Guide (481599-003, August 2008)

Appendix C Host Access to Storage 261
For a system using loop topology, the following figure shows how port WWNs and
mapped volumes are presented if controller B fails.
Figure C-4 FC Storage Presentation During Failover (Switch Attach, Loop
Configuration)
FC switch
A0 A1
B0 B1
No
data
No
data
A1 & B0 WWNs,
A & B volumes
A0 & B1 WWNs,
A & B volumes
A0 & B1 WWNs,
A & B volumes
A1 & B0 WWNs,
A & B volumes
A0 & B1 WWNs,
A & B volumes
A1 & B0 WWNs,
A & B volumes
(Failed)