Oce/Orlm - HighPoint RocketRAID 231x User Manual

RocketRAID 231x Driver and Software Installation

7 - OCE/ORLM

The RocketRAID host adapter supports both OCE (Online Capacity Expansion), and
ORLM (Online RAID Level Migration).
The RAID software provides support for these features through a single function,
known as OCE/ORLM.
With the OCE/ORLM function, you can transform an array from one RAID level to
another RAID level and/or resize the array dynamically, even under I/O load.
To perform OCE/ORLM on an array:
1. Highlight the "Management" menu, and select the "Array Management"
function.
2. Highlight the array you want to alter.
3. Click the button on the toolbar or select "OCE/ORLM" command from
the "Operation" menu.
4. The OCE/ORLM window will appear.
5. The interface is very similar to the Array Creation Wizard interface. Select the
type of array you wish to change the existing array into, then set any corre-
sponding parameters (cache/ initialization options, capacity, if relevant).
Notes:
1. When expanding a JBOD array, all the original disks must be included in the
target array, and these disks must be selected in the same order (as the
original array). If you want to migrate a JBOD array to another RAID level,
only the first member disk can be included in the target array. For example, a
JBOD comprised of 3 disks (1, 2, 3), can only be "migrated" using disk 1.
Disks 2 and 3 cannot be used – disk 1 would have to be combined with other
disks attached to the RocketRAID host adapter (4, 5, 6, 7, 8).
2. You cannot change an array to another type of array with a smaller capacity.
In some cases, a disk may need to be added to the RocketRAID host
adapter.
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