HighPoint RocketRAID 4320 User Manual page 35

Web RAID Management Interface
2) Highlight the desired RAID array
3) Click the "Maintenance" button.
Click the Verify button to start the verify process.
OCE/ORLM – modifying existing RAID arrays
Expanding/Migrating an Array
With the OCE/ORLM function, you can migrate an array from one RAID level to
another RAID level and/or expand the array dynamically, even under I/O load. This
function implements both Online Capacity Expansion (OCE) and Online RAID Level
Migration (ORLM).
To expand/migrate an array:
1) Select "Manage - Array" from the menu.
2) Highlight the desired RAID array
3) Click the "Maintenance" button.
4) Select the target array type.
5) Click the "OCE/ORLM" button.
6) The OCE/ORLM page will appear. The interface is similar to the array creation
wizard:
Note:
A) 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 card.
B) 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 card.
During the OCE/ORLM procedure, the redundancy level of the array will be the
lowest of the source and target arrays; e.g. if you ORLM a RAID0 array to a RAID1
array, the array will be non-redundant until the procedure is complete.
C) The OCE/ORLM process can be aborted and continued at later time. However,
you should always stop the transform progress from the RAID Management software.
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