HSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and Configuration Guide

Planning a Subsystem
1–6 HSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and
Configuration Guide
• All hosts must have operating system software that supports multiple-bus failover
mode
Figure 1–5: Typical multiple-bus configuration
CXO7094B
Host
port 1
active
Host
port 2
active
Host
port 2
active
Host
port 1
active
D100 D101 D120D0 D1 D2
Host 1
"RED"
Controller A
Controller B
All units visible to all ports
FCA1 FCA2
Host 2
"GREY"
FCA1 FCA2
Host 3
"BLUE"
FCA1 FCA2
Switch
or hub
Switch
or hub
NOTE: FCA = Fibre Channel Adapter