Compaq StorageWorks HSG60 ACS Solution Software V8.6 for Linux X86 and Alpha Installation and Configuration Guide

Planning a Subsystem 1–19
Figure 1–9. Limiting host access in transparent failover mode
Restricting Host Access by Disabling Access Paths
If more than one host is on a link (that is, attached to the same port), host access can be
limited by enabling the access of certain host connections and disabling the access of
others. This is done through the ENABLE_ACCESS_PATH and
DISABLE_ACCESS_PATH switches of the ADD UNIT or SET unit commands. Access
path is a unit switch, meaning it must be specified for each unit. Default access is
accessible to all hosts.
CXO7081B
Host
port 1
active
Host
port 2
active
D100 D101 D120D0 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