Compaq Parallel Database Cluster Model PDC/O2000 for Oracle8i and Windows 2000 Administrator Guide

Cluster Architecture 2-15
Fibre Channel SAN Switch-to-Array
Controller Paths
Figure 2-5 highlights the I/O data paths that run between the Fibre Channel
SAN Switches and the two single-port RA4000 Array Controllers in each
RA4000/RA4100 Array.
Fibre Host
Adapters (2)
RA4000/4100
Array #1
RA4000/4100
Array #2
Fibre Channel
SAN Switch #1
Node 1 Node 2
Fibre Channel
SAN Switch #2
Fibre Host
Adapters (2)
Figure 2-5. Fibre Channel SAN Switch-to-RA4100/4000 Array data paths
If any component along an active path fails, Secure Path detects the failure and
automatically transfers all I/O activity to the components on the defined
backup path.
I/O Path Configuration Guidelines for
Redundant Fibre Channel Fabrics
You can use either of two I/O path configurations for every redundant FC-AL
in your PDC/O2000 cluster:
■ Active/standby configuration
■ Active/active configuration