HP Surestore Disk Array 12h - And FC60, Advanced User'S Manual, Page: 256 / 466

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Adding Capacity to the Disk Array
Adding Additional Disk Enclosures
Adding additional disk enclosures is another way to increase the capacity of the disk array.
Up to six disk enclosures can be added to a disk array. Because it requires shutting down
and possibly reconfiguring the disk array, adding new disk enclosures should be done by a
trained-service representative. See
"Adding Disk Enclosures to Increase Capacity" on
page 224 for more information on adding disk enclosures.
An alternative to adding new disk enclosures is to move enclosures and their associated
disks from one Disk Array FC60 to another. The LUNs on all disks in the enclosure should
be unbound before moving it. See
"Moving Disks from One Disk Array to Another" on
page 255 for more details.
Replacing Disk Modules with Higher Capacity Modules
If you have no available slots for adding new disk modules, you can increase the capacity
of the disk array by replacing existing disk modules with higher capacity disk modules.
This is typically done on a LUN-by-LUN basis and requires backing up and restoring all data
on the LUN.
To increase capacity by replacing disk modules:
1. Identify the LUN impacted by the replacement of the disk modules. Make sure you
replace all the disks in the LUN with the higher-capacity disks.
2. Backup all data on the LUN.
3. From the host, stop all I/O activity to the LUN unmount the file system.
4. Unbind the LUN using the management tool of your choice:
– To use SAM, see "Unbinding a LUN" on page 271
– To use Array Manager 60, see "Unbinding a LUN" on page 293
– To use STM, see "Unbinding a LUN" on page 315
5. Replace the disk modules. See "Disk Enclosure Modules" on page 386 for instructions
on replacing disk modules.