HP Surestore Disk Array 12h - And FC60, Advanced User'S Manual, Page: 272 / 466

272
Managing the Disk Array Using SAM
Note
Can I replace any LUN on the disk array?
Yes. In addition, the replace command is the only way you can alter the
configuration of LUN 0.
LUN 0 is unique in that it must exist on the disk array to permit communication with the
host. Consequently, you cannot unbind LUN 0. If you want to alter LUN 0, you must use the
replace command.
To replace a LUN:
1. On the main SAM screen, select Disks and File Systems.
2. On the Disks and File Systems screen, double-click the Disk Devices icon. The Disk
Devices list is displayed. There is an entry for each disk array controller, and each LUN
on the disk array. The LUNs are listed beneath the owning controller.
3. From the Disk Devices list, select the LUN to be unbound.
4. Select the Actions menu, the Disk Array Maintenance menu option, and then Replace.
The LUN Management screen is displayed.
5. Click the RAID Level button and select the desired RAID level for the LUN.
6. Select the disks to include in the LUN. The disks that were members of the original LUN
are marked for inclusion. Remove any of these disks, or add additional disks as desired.
7. Click the Stripe Size button and select the stripe element size. You can also enter the
stripe size in the field. The stripe size must be a multiple of the current cache page size.
If you enter a value that is not a multiple of the cache page size, the value will be rounded
up to the nearest correct value.
8. In the LUN Owner field, select the controller that will own the LUN. LUN ownership
should be balanced between controllers for optimum performance.
9. Click O
K
to bind the new LUN and exit the screen.
Note
After binding a LUN, you must execute the
insf -e
command to install special
device files on the LUN. This makes the LUN usable by the operating system.