Highpoint RocketRAID 1740 User's Guide download pdf (Page 33)

RocketRAID 174x Driver and Software Installation

1) Select menu “Manage - Array”.

2) Click the “Maintenance” button.

3) Click the “Rebuild” button. The rebuild process should begin.

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) Click the Maintenance button.

3) Select the target array type.

4) Click the OCE/ORLM button.

5) The OCE/ORLM page will appear. The interface is similar to the array creation

wizard.

Note:

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 (4).

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.

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.

An unexpected system crash may result in data loss while performing OCE/ORLM on

an array. We strongly recommend backing up data before starting the OCE/ORLM

process.

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Highpoint RocketRAID 1740 User's Guide Page 33