Figure 4-3. Dual Redundancy Configuration For A Redundant Fc-Al - Compaq 112726-001 - ProLiant - 6500 Administrator's Manual

4-12 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide
Figure 4-3 shows the correct method for cabling the I/O path components for
dual redundancy in a redundant FC-AL. In Figure 4-3, both Storage Hubs
connect to port 1 on one array controller and to port 2 on the other array
controller in each storage subsystem. If one Storage Hub fails, the other
Storage Hub still has access to port 1 on one array controller and port 2 on the
other array controller in each storage subsystem. This configuration ensures
that the host adapters can still access the full range of LUNs.
Host Adapters (2)
Node 1
Storage
Hub #1
P1 P2
A
P1 P2
B
Storage Subsystem #1

Figure 4-3. Dual redundancy configuration for a redundant FC-AL

See Chapter 2, "Cluster Architecture," for more details on how to configure
redundant FC-ALs for dual redundancy.
Host Adapters (2)
Node 2
Storage
Hub #2
P1 P2
A
P1 P2
B
Storage Subsystem #2