HP StorageWorks HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide (AA-RV1HA-TE, March 2005)

Planning a Subsystem
54 HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide
For example:
In Figure 17, restricting the access of unit D101 to host 3, the host named
BROWN can be done by enabling only the connection to host 3. Enter the
following commands:
SET D101 DISABLE_ACCESS_PATH=ALL
SET D101 ENABLE_ACCESS_PATH=BROWN1B2
If the storage subsystem has more than one host connection, carefully specify the
access path to avoid providing undesired host connections access to the unit. The
default condition for a unit is that access paths to all host connections are enabled.
To restrict host access to a set of host connections, specify
DISABLE_ACCESS_PATH=ALL for the unit, then specify the set of host
connections that are to have access to the unit.
Enabling the access path to a particular host connection does not override
previously enabled access paths. All access paths previously enabled are still
valid; the new host connection is simply added to the list of connections that can
access the unit.
Note: The procedure of restricting access by enabling all access paths then disabling
selected paths is not recommended because of the potential data/security breach that
occurs when a new host connection is added.