Failed Logical Drive - Drive Failure

What Caused the Problem?

One or more drives in the array have failed, causing the associated logical drives to fail. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

 Caution: Possible loss of data accessibility. Do not remove a component when either (1) the Service action (removal) allowed (SAA) field in the Details area of this recovery procedure is NO (), or (2) the SAA LED on the affected component is OFF (note that some products do not have SAA LEDs). Removing a component while its SAA LED is OFF may result in temporary loss of access to your data. Refer to the following Important Notes for more detail.

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

Recovery Steps

1

It may be possible to recover data from the failed logical drives. If you wish to attempt a data recovery, you must contact your technical support representative; do NOT perform steps 2 - 11. Performing any recovery actions before contacting your technical support representative could jeopardize any chance of recovering data. If you prefer to recover from an existing backup or you have mistakenly removed the wrong drive while performing a degraded logical drive recovery procedure, go to step 2.

2

If you have mistakenly removed the wrong drive while performing a degraded logical drive recovery procedure, you can return the logical drive back to the degraded state by replacing the drive you removed. After the logical drives return to the degraded state, click the Recheck button and perform the recovery procedure listed for a degraded logical drive. You are finished with this procedure.

3

Important:  You will delete the array later in these recovery steps.  If you wish to re-create the array later using the same configuration, select the Storage Subsystem >> View >> Profile menu option and then click the Save As button to save a copy of the Storage Subsystem Profile.  Make sure the Logical Drives and Arrays options are selected in the Save As dialog.

There are several different types of logical drives that can exist in an array. Use the Recovery Guru details area to determine the affected array. Then, find the array in the Logical View of the AMW. Use the information provided by the AMW to determine the types of logical drives on the affected array. Step through every entry in the following table and perform all procedures associated with the logical drive type combination for the affected array.

If... Then...
The affected array contains one or more source or target logical drives in a copy operation

Go to the Copy Manager by selecting Logical Drive >> Copy >> Copy Manager.

Check to see if any of the copy operations involving the affected logical drives have a copy status of Pending, In Progress, or Failed. Highlight the copy pair that contains the affected logical drive and select Copy >> Stop.

Check to see if any of the Target logical drives have read-only enabled . Disable read-only by selecting ALL target logical drives that have read-only enabled and then selecting Change >> Target Logical Drive Permissions >> Disable Read-Only.

One or more flashcopy logical drives exist on the failed array

The information on the flashcopy(s) is no longer valid and cannot be retrieved. Delete all flashcopy logical drives associated with the failed array by highlighting the flashcopy logical drive and selecting Logical Drive >> Delete. You will be able to create any needed flashcopy logical drives after this procedure has been completed.

One or more flashcopy repository logical drives exist on the failed array

The information on the flashcopy logical drives associated with the affected flashcopy repository logical drives is no longer valid and cannot be retrieved, even if the associated flashcopy logical drives exist on a different array. Delete all flashcopy logical drives associated with the flashcopy repositories on the failed array by highlighting the associated flashcopy logical drives and selecting Logical Drive >> Delete. You will be able to create any needed flashcopies after this procedure has been completed.

The mirror repository logical drives exist on the affected array

a Save the Storage Subsystem Profile by using the Storage Subsystem >> View >> Profile option and then selecting the Save As button. The profile will give you a roadmap of any mirror relationships you may want to recreate after re-activating Remote Mirroring.
b Remove all mirror relationships on this storage subsystem by highlighting any primary logical drive and selecting Logical Drive >> Remote Mirroring >> Remove Mirror Relationship... You can then select all mirror relationships on the storage subsystem.
c Deactivate the Remote Mirroring premium feature by selecting Storage Subsystem >> Remote Mirroring >> Deactivate...
d Re-activate the Remote Mirroring premium feature by selecting Storage Subsystem >> Remote Mirroring >> Activate... Your Mirror Repository logical drives will now reside on a different array. Once the failed array is restored, step 9 will help you restore your mirror relationships.

One or more Remote Mirroring primary or secondary logical drives exist on the affected array, but the Mirror Repository logical drives exist on a different array

a Save the Storage Subsystem Profile by using the Storage Subsystem >> View >> Profile option and then selecting the Save As button. The profile will give you a roadmap of any mirror relationships you may want to recreate after re-activating Remote Mirroring.
b Remove the mirror relationships for only those primary or secondary logical drives on the affected array by highlighting any of the affected primary logical drives and selecting Logical Drive >> Remote Mirroring >> Remove Mirror Relationship... You can then select only those mirror relationships that exist on the affected array.
c Once the failed array is restored, step 9 will help you restore your mirror relationships for the logical drives on the affected array. The mirror relationships that use secondary logical drives on the affected array will synchronize automatically once the failed array is restored.
d Go to step 4.

Only standard logical drives exist on the affected array

Go to step 4.

4

Locate all failed drives associated with this array (the fault indicator lights on the failed drives should be lit). To determine the associated drives, select one of the affected logical drives, listed in the Recovery Guru Details area, in the Logical View of the Subsystem Management Window. Each associated drive will have an association dot underneath it.

5 Remove each failed drives associated with this array, and then go to step 6.

6

Wait 30 seconds, and then insert the new drives into the same slots (if you want to keep the array on drives in the same slot locations). The fault indicator light on the replaced drives may be lit for a short time (one minute or less).

Note: Wait until the replaced drives are ready (fault indicator light off) before going to step 7.

7

Important: All data on the array will be lost once you complete this step.  Be sure that you have an adequate backup, or go back to step 1 if you want to attempt data recovery.

Highlight the affected array in the Logical view of the AMW, and then select the Array >> Delete menu option.

8
If... Then...
You want to re-create the array with the same configuration before the failure
a Select a Free Capacity node, and then select the Array >> Create menu option.
b While creating the new array, refer to the Storage Subsystem Profile you saved in step 3 for information about how the previous array was configured.
c Go to step 9.
You do not want to re-create the array Go to step 11.
9
If... Then...
You deleted one or more flashcopy logical drives or flashcopy repository logical drives in step 3. If desired, create new flashcopy logical drives to replace those you deleted.
You stopped one or more copy operations in step 3. If desired, re-create any copies you stopped by highlighting the copy pairs in the Copy Manager and selecting Copy >> Re-Copy.
You disabled read-only on any target logical drives in step 3. Restore that data on those logical drives from backup.
You removed mirror relationships during step 3 Re-create any desired mirror relationships by selecting any logical drive you wish to be a primary (note that some of these logical drives may reside on remote storage subsystems) and selecting Logical Drive >> Remote Mirroring >> Create...
10

Add the logical drives in the new array back to the operating system. You may need to reboot the system to see the logical drives.

Note: Do not start I/O to these logical drives until after you restore from backup.

Restore the data for the new logical drives from backup.

11

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.