Compaq StorageWorks HSG60 ACS Solution Software V8.6 for Sun Solaris Installation and Configuration Guide

1–22 HSG60 ACS Solution Software Version 8.6 for Sun Solaris Installation and Configuration Guide
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.
For example:
In Figure 1–11, you can restrict the access of unit D101 to host 3, named BROWN, 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 giving 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.
IMPORTANT: The procedure of restricting access by enabling all access paths then disabling
selected paths is particularly not recommended because of the potential data/security breach
that occurs when a new host connection is added.
d.
Restricting Host Access by Offsets
Offsets establish the start of the range of units that a host connection can access.
For example:
In Figure 1–11, assume both host connections on port 2 (connections BLACK1B2 and
BROWN1B2) initially have the default port 2 offset of 100. Setting the offset of
connection BROWN1B2 to 120 will present unit D120 to host BROWN as LUN 0.
SET BROWN1B2 UNIT_OFFSET=120