HP Surestore Disk Array 12h - And FC60 Advanced User's Manual page 218

Step 5. Replace LUN 0
LUN 0 was created solely to allow the host to communicate with the disk array when it is
first powered on. It should be replaced with a usable LUN. If not replaced, a substantial
amount of storage will be wasted.
To replace LUN 0, type:
amcfg -R <cntrlr>:0 -d <channel:ID>,<channel:ID>..... -r <RAIDlevel>
<options> <ArrayID>
For example, the following command replaces LUN 0 with a RAID 0/1 LUN using four
disks:
amcfg -R A:0 -d 1:0,2:0,3:0,4:0 -r 1 <options> <ArrayID>
•
For a complete explanation of the command syntax and parameters, refer to the amcfg
man page, or see "Replacing a LUN" on page
Step 6. Disable WCE On All Disks
For optimum data protection, WCE (Write Cache Enable) should be disabled on all disks in
the array.
To disable WCE on all disks, type:
amutil -w <ArrayID>
To ensure optimum protection against data loss, it is recommended that Write
Note
Cache Enable be disabled on all disks in the array. Disabling disk WCE will
impact disk array performance. However, it reduces the potential for data loss
during a power loss.
Step 7. Set Disk Array Time and Date
The disk array maintains its own time and date internally. These values are used to write
time stamps on log entries. The disk array settings should be synchronized with the time
Configuring the Disk Array
218
294.