Degraded Logical Drive

What Caused the Problem?

One or more drives have failed in an array and the logical drives associated with this array have become degraded . The data on the logical drives is still accessible. However, data may be lost if another drive in the same array fails. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

Caution
Electrostatic discharge can damage sensitive components. Use a grounding wrist strap or other anti-static precautions before removing or handling components.

Important Notes

Recovery Steps

1

Remove all failed drives associated with this array (the fault indicator lights on the failed drives should be on). To make a visual association of the failed drive(s), select one of the degraded logical drives in the Logical View of the Subsystem Management Window, that is listed in the Recovery Guru Details area. Each drive associated with the logical drive will have an association dot underneath it. The failed drive is marked .

2

Wait 30 seconds, then insert the new drive(s). The fault indicator light on the new drive(s) may become lit for a short time (one minute or less).

Result: Data reconstruction should begin on the new drive(s). Their fault indicator lights will go off and the activity indicator lights of the drives in the array will start flashing. When the reconstruction starts, the array's logical drive icons in the Logical View of the Subsystem Management Window change to Operation in Progress , then to Optimal , as the logical drives are reconstructed.

Notes:

  • If you are replacing a drive in a storage subsystem that contains hot spares, drive reconstruction will start on the hot spare before you insert the new drive. The data on the replacement drive may not be reconstructed until after it has completed the process on the hot spare.
  • If reconstruction does not start within a few minutes, select the new drive; then, select Drive>>Reconstruct to start reconstruction on the drive.
  • To monitor reconstruction progress on the affected logical drives or to change the reconstruction rate, select the reconstructing logical drive; then, select Logical Drive>>Properties. Note that once the operation in progress has completed, the progress bar is no longer displayed in the properties dialog.
  • Wait until the reconstruction is completed for all logical drives before continuing.

3

Select Recheck to rerun the Recovery Guru to ensure that the failure has been fixed.