Compaq StorageWorks HSG60 ACS Solution V8.6 for SGI IRIX Installation and Configuration Guide

Configuration Procedures 5–23
Changing Switches for a Storageset or Device
You can optimize a storageset or device at any time by changing the switches that are
associated with it. Remember to update the storageset's profile when you change its
switches.
Displaying the Current Switches
To display the current switches for a storageset or single-disk unit, enter a SHOW
command, specifying the FULL switch:
SHOW STORAGESET-NAME
or
SHOW DEVICE-NAME FULL
Changing RAIDset and Mirrorset Switches
Use the SET storageset-name command to change the RAIDset and Mirrorset switches
associated with an existing storageset. For example, the following command changes the
replacement policy for RAIDset RAID1 to BEST_FIT:
SET RAID1 POLICY=BEST_FIT
Changing Device Switches
Use the SET device-name command to change the device switches. For example, to
request a data transfer rate of 20 MHz for DISK10000:
SET DISK10000 TRANSFER_RATE_REQUESTED=20MHZ
Changing Initialize Switches
The initialization switches cannot be changed without destroying the data on the
storageset or device. They can only be changed by reinitializing the storageset. This is
similar to formatting a disk drive; all data is destroyed during this procedure.
Changing Unit Switches
Use the SET unit-name command to change the characteristics of a unit. For example, the
following command enables write protection for unit D100:
SET D100 WRITE_PROTECT