Missing Disk Group
What Caused the Problem?
The storage array has detected that all of the physical disks associated with a disk group are missing. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.
Caution: Electrostatic discharge can damage sensitive components. Always use proper antistatic protection when handling components. Touching components without using a proper ground may damage the equipment.
Important Notes
- This problem may be the result of the following scenarios:
- There was a loss of power to one or more expansion enclosures.
- You removed physical disks because you intend to export them to
another storage array. However, you did not use the Export
operation available in the storage management software to prepare
these physical disks before removal.
- You removed all physical disks associated with a disk group for some other reason.
- This problem can also be displayed as a result of one or more physical disks
being bypassed. If there is a Bypassed Physical Disk problem being
reported in the Summary area, complete the recovery steps to
correct the Bypassed Physical Disk problem first. Only continue with
the Recovery Steps for this problem if it is still displayed after
you click the Recheck button.
- The affected disk group will be displayed as a missing disk
group
.
You can view the status of a disk group by clicking on the
Disk Groups and Virtual Disks link in the Summary tab.
Recovery Steps
| 1 |
| If... |
Then... |
| You want to retain the disk group on this array
OR
You want to export the disk group to a different storage array
|
Go to step 2. |
| You DO NOT want to retain the disk group in this array
OR
You cannot complete a Disk Group Export
because you do not have the physical disks in your
possession
|
| a |
From the
Modify tab, click the Delete
Disk Groups and Virtual Disks link. |
| b |
Select the missing disk group from the list and delete it.
|
| c |
Go to step 4.
|
|
|
| 2 |
| If... |
Then... |
| The physical disks associated with the disk group have been removed |
Reinsert all of the
missing physical disks associated with this disk group
into the original slots.
Wait until the disk group and its associated virtual disks display optimal status, and then go to step 3.
|
| One or more expansion enclosures associated with the disk group does not have power |
Check to see that the each expansion enclosure power supply is properly connected to an operating power source, has the power switch in the
ON position, and has an optimal status (a separate
problem will be displayed in the Summary area for a power supply that is not optimal).
| If... |
Then... |
| You find a power problem |
Correct the problem and go to step 4. |
| You cannot find a power problem |
Contact your technical support representative. |
|
|
| 3 |
| If... |
Then... |
| You want to export the disk group to a different storage array |
| a |
From the
Support tab, click the
Advanced Support Tasks link, and
then click the Export Disk
Group link. |
| b |
Follow the instructions in the Export Disk Group wizard to
successfully export the disk group. |
| c |
Go to step 4.
|
|
| You DO NOT want to export this disk group |
Go to step 4. |
|
| 4 |
Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, contact your technical support representative.
|
Note: Additional information on this issue may be available. Please visit the Dell support website at support.dell.com and select your product model. Choose "troubleshooting" as your tool option, then search by this procedure title.