System information

Using the RAID GUI
2-36
• Partition state transition
The corresponding events and state transitions of a partition are shown in the table below:
Before logical disk recovery, make sure the following:
• There are enough hard disks in the disk group.
• No background tasks in progress, such as disk rebuilding or RAID reconfiguration.
• No reconfiguration tasks are performed by the faulty logical disk.
• Start a recovery
When there are any hard disk conflicts, there might be faulty disk groups, logical disks, or volumes on your controller. You
can perform DG recovery to restore lost member disks to a disk group. The faulty logical disks on the disk group are
recovered automatically when the disk group is recovered.
To perform a disk group recovery, do the following:
1. Select Maintenance Utilities > Array Recovery from the main menu.
2. Select DG from the Recovery Type drop-down menu.
3. Select a disk group, and click Recover.
4. The Restore the Array window displays. Select the original member disks to restore.
5. Click Apply and a confirmation prompt displays. Click Confirm.
6. The disk group recovery starts. Rebuilding will also start for degraded logical disks on a disk group.
If the logical disk is not recovered automatically after disk group recovery, perform logical disk recovery. After logical disks
are restored, you can perform the volume recovery to restore the lost member logical disks to a volume.
From To
Disk is failed or removed.
OPTIMAL
FAULTY: for faulty logical disk
BANISH: for degraded logical disk
REBUILD BANISH
UNTRUST BANISH
Lost member disk is replaced by a new disk for disk rebuilding.
FAULTY UNTRUST (The logical disk is not recoverable.)
BANISH
UNTRUST
(and later to REBUILD)
Lost member disk is restored to a disk group by the ARU.
FAULTY OPTIMAL
BANISH
UNTRUST
(and later to REBUILD)
Force to recover a logical disk by the ARU.
UNTRUST OPTIMAL
Force to recover a logical disk by the ARU.
UNTRUST REBUILD
The partition completes data rebuilding.
REBUILD OPTIMAL
Table 2-12 State transition
Note
1. If a non-member disk is selected, check the Force to recover disk option and specify the Disk
Member Index. Make sure the recovery index is correct.
2. To reduce the possibility of data loss, ensure that the recovery order is correct when the Force
to recover disk option is chosen.