HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide

Table Of Contents
Planning a Subsystem
1–14 HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and
Configuration Guide
If a controller pair is in transparent failover mode and port 1 and port 2 are on the
same link (that is, all ports are on the same loop or fabric), each adapter will have
two connections, as shown in Figure 1–10.
If a controller pair is in multiple-bus failover mode, each adapter has two
connections, as shown in Figure 1–11.
Figure 1–9: Connections in separate-link, transparent failover mode
configurations
CXO7081B
Host
port 1
active
Host
port 2
active
D100 D101 D120
D0 D1
Switch or hub
Switch or hub
Controller A
Controller B
Connection
AQUA1A1
Connection
BLACK1B2
Connection
BROWN1B2
Host
port 2
standby
Host
port 1
standby
Host 1
"AQUA"
FCA1
Host 2
"BLACK"
FCA1
FCA1
Host 3
"BROWN"
NOTE: FCA = Fibre Channel Adapter