Partially Complete Array
What Caused the Problem?
One or more drives are missing from an array. Because of the RAID configuration of the array, there are still enough drives remaining that the logical drives can continue
servicing I/O. However, the array may not be able to continue I/O if more drives
are removed or fail.
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
- You should fix this problem as soon as possible because further
drive failures could result in this array and all its
associated logical drives becoming Failed
.
This will also result in a Incomplete Array problem being
displayed in the Summary area, and could result in the loss of data. - This problem
may occur as a result of one of the following scenarios:
- There was a loss of power to one or more drive enclosures.
- You removed drives - either inadvertently or in order to replace the drives.
- You removed drives because you intend to export them to
another storage subsystem. However, you did not use the Export
operation available in the storage management software to prepare
these drives before removal.
- You inserted drives because you intend to import them from another storage subsystem. However, you selected the
Force Import
operation in the storage management software and not all of the
drives for the array are inserted.
- This problem can also be displayed as a result of one or more drives
being bypassed. If there is a Bypassed Drive problem being
reported in the Summary area, complete the recovery steps to
correct the Bypassed Drive problem first. Only continue with
the Recovery Steps for this problem if it is still displayed after
you click the Recheck button.
- The affected array will be displayed as a degraded array
in the logical view. In addition, If a logical drive in the affected array is receiving I/O, then the logical drive
may be displayed as a degraded logical drive
if there is not sufficient hot spare coverage.
- You can replace missing drives while the affected logical drives are receiving I/O.
Recovery Steps
If... |
Then... |
You removed the drives - either
inadvertently or you need to replace the drives |
Go to "Completing a Drive Replacement." |
You removed the drives because you intend to export these drives to another storage subsystem
|
Go to "Completing an Array Export."
|
You have inserted drives from another storage subsystem and already selected the
Force Import option |
If... |
Then... |
The missing drives were not imported with the rest of the drives
because they were damaged |
Go to "Completing a Drive Replacement." |
You want to import the original drives that were associated with the array in the source storage subsystem
|
Go to "Completing an Array Import."
|
|
Completing a Drive
Replacement
1 |
If... |
Then... |
You inadvertently removed the drives |
- Reinsert all removed drives.
- Wait for all logical drives and arrays to display
an optimal status.
- Go to step 3.
|
You want to use new drives or Unassigned
drives as replacements
|
Verify that any newly inserted drives are:
- A capacity equal to or greater than the failed drives you removed.
- Certified for use in this storage subsystem.
Go to step 2.
|
|
2 |
Assign a drive to take over for the
Missing drive by completing the following steps:
a |
Refer to the Details area to find
out which array has been affected. |
b |
Highlight the affected array
in the Logical View of the Subsystem Management Window (AMW), and then
select the Array >> Replace Drives menu option. |
c |
From the Failed and Missing Drives
table in the Replace Drives dialog, select the Missing drive that
corresponds to the to the slot location reported in the Details
area. |
d |
Select an appropriate replacement
drive, and then click the Replace Drive button. Notes:
- For additional assistance using the Replace Drives dialog,
refer to the online help.
- When the Replace Drive process begins, data is reconstructed on the new drive using information on the other drives
comprising the array. This reconstruction should begin automatically.
The drive's fault indicator lights will go off and the
activity indicator lights of the drives in the array
will start flashing.
- If you are replacing a drive in a storage subsystem that contains hot spares, data 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.
|
e |
When the drive reconstruction
completes and the array is Optimal, go to step 3. |
|
3 |
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. |
Completing an Array Export
1
|
Reinsert all of the missing drives associated with this array
into the original slots. The Recovery Guru Details area provides the physical location of the missing drives as well as the affected array.
|
2
|
Wait until the array and its associated logical drives display optimal status, and then go to step 3.
|
3
|
From the Logical View of the Subsystem Management Window, select the array you want to export, and then select the Advanced >>
Maintenance >> Export Array menu option. |
4 |
Follow the instructions in the Export Array wizard to
successfully export the array. |
5 |
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.
|
Completing an Array Import
1
|
Insert all of the missing drives associated with this array with the original drives from the source storage subsystem. The Recovery Guru Details area provides the physical location of the missing drives as well as the affected array.
If the original drives are not available, you can also use
the Replace Drive option in the storage management software
to reconstruct other unassigned drives in the storage subsystem
to take over for the missing drives.
|
2
|
Wait until the array and its associated logical drives display optimal status, and then go to step 3.
|
3 |
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.
|