HSG80 ACS Solution Software V8.6 for Compaq OpenVMS Installation and Configuration Guide

5–22 HSG80 ACS Solution Software Version 8.6 for Compaq OpenVMS Installation and Configuration Guide
NOTE: It is strongly suggested that, for simplicity, the identifier match the unit number. For
example, to set an identifier of 97 for unit D97, use the following command:
SET D97 IDENTIFIER=97
Using SWCC to Specify LUN ID Alias for a Virtual Disk
Setting a LUN ID alias for a virtual disk is the same as setting a unit identifier. To set the
LUN ID alias for a previously created virtual disk, perform the following procedure:
1. Open the storage window, where you see the properties for that virtual disk.
2. Click on the Settings Tab to see changeable properties.
3. Click on the Enable LUN ID Alias button.
4. Enter the LUN ID alias (identifier) in the appropriate field. It is strongly suggested
that, for simplicity, the LUN ID alias match the virtual disk number.
NOTE: If, while using the Compaq HBA, you create a unit after your server is online, you must
run the SaveCfg command to see the unit.
Preferring Units
In multiple-bus failover mode, individual units can be preferred to a specific controller.
For example, to prefer unit D102 to “this controller,” use the following command:
SET D102 PREFERRED_PATH=THIS
RESTART commands must be issued to both controllers for this command to take effect:
RESTART OTHER_CONTROLLER
RESTART THIS_CONTROLLER
NOTE: The controllers need to restart together for the preferred settings to take effect. The
RESTART this_controller command must be entered immediately after the RESTART
other_controller command.