Removing drives

Note down the ID of the faulty drive to be removed.

Also record the WWID of the faulty drive to be removed. WWID is used to remove the faulty drive from the server.

Verify STATUS of the storage node containing the faulty drive in the Storage node detailed information window.

If STATUS of the storage node is "Ready" or "RemovalFailed", go to the next step.

Turn on the locator LED of the drive to be removed.

For details about the procedure, see Turning on/off the locator LED (Bare metal).

Note:

If the configuration differs from those described in VSP One SDS Block Hardware Compatibility Reference, locator LED operation might not be available. In such a case, see Notes in step 4 to verify the drive location.

From the server, locate the drive whose locator LED is turned on, and then confirm the installation location of the drive to be removed.

Remove the faulty drive from the server.

For details, see the server vendor's documentation.

Note:

If the locator LED cannot be turned on, confirm the installation location of the drive to be removed as follows: Find a drive that has the same WWID as that of the faulty drive recorded in step 1 and the same WWN or EUI as that of the drive recorded at the time of addition. Confirm the location in which the drive recorded in association with the WWN or EUI is installed.
If the value recorded at the time of drive addition was a WWN, there might be a difference in the last 1 to 3 digits of the right-side 16-digit part of the WWID recorded in step 1.

Click the information icon on the navigation bar, and then select Storage Cluster Information.

Obtain information about the storage cluster to verify the state of the write back mode with cache protection.

Take the following action according to the state of the write back mode with cache protection (WRITE BACK MODE WITH CACHE PROTECTION).

State of the write back mode with cache protection	Action to be taken
Enabled	Go to the next step.
Disabled	Go to step 7.
Enabling	Enable the write back mode with cache protection according to Enabling the write back mode with cache protection in the VSP One SDS Block System Administrator Operation Guide, and then go to the next step. Or, cancel the enabling the write back mode with cache protection, and then go to step 7.
Disabling	Disable the write back mode with cache protection according to Disabling the write back mode with cache protection in the VSP One SDS Block System Administrator Operation Guide, and then go step 7. Or, cancel the disabling the write back mode with cache protection, and then go to the next step.

In the Storage Cluster Information dialog, verify the summary of metadata redundancy for cache protection in write back mode with cache protection.

Confirm the user data protection type (REDUNDANT POLICY) in the Storage Pool window.

Verify whether the summary of metadata redundancy for cache protection in the write back mode with cache protection (METADATA REDUNDANCY SUMMARY) meets the conditions shown in the following table.

User data protection type (REDUNDANT POLICY)	Condition
4D+1P	The value of METADATA REDUNDANCY SUMMARY is 1.
4D+2P	The value of METADATA REDUNDANCY SUMMARY is 2.
Duplication	The value of METADATA REDUNDANCY SUMMARY is 1.

User data protection type

(REDUNDANT POLICY)

Condition

4D+1P

The value of METADATA REDUNDANCY SUMMARY is 1.

4D+2P

The value of METADATA REDUNDANCY SUMMARY is 2.

Duplication

The value of METADATA REDUNDANCY SUMMARY is 1.

If the conditions are met, go to the next step.
If the conditions are not met, take action as follows. Then, go to the next step.
- If the VSP One SDS Block Administrator displays "Alerting" for "Health Status" of a storage node, take action as described in If a health status error is detected in the VSP One SDS Block Administrator in the VSP One SDS Block Troubleshooting Guide.
- If there are storage nodes whose STATUS is MaintenanceBlockage in the Storage Nodes list tab (in the Storage Nodes window), perform maintenance recovery for the nodes according to the procedure in Performing maintenance recovery for storage nodes.
- If the KARS06596-E event log is output, take action according to the instruction, and then wait until the metadata redundancy for cache protection is recovered.

CAUTION:

If the storage node is blocked, the metadata redundancy for cache protection is not recovered unless the storage node is recovered by maintenance operation. Recover the blocked storage node first by performing maintenance operation.

Determine whether Rebuild operation is being performed or whether an error has occurred during Rebuild operation by confirming the Protection Domain window.

If Rebuild operation is not being performed and no error has occurred, go to the next step.

If Rebuild operation is being performed or an error has occurred during the Rebuild operation, confirm the following status, and then take appropriate action.

REBUILD STATUS
- Stopped: Status in which Rebuild operation is not being performed.
- Running: Status in which Rebuild operation is being performed. The Rebuild operation cannot be stopped. Wait until the Rebuild operation is completed, and then verify the Rebuild status in the Protection Domain window again.
- Error: Status in which Rebuild processing cannot be performed due to an error. Verify the event logs and perform troubleshooting.
REBUILD PROGRESS RATE

Shows the progress rate (%) of Rebuild operation. The progress rate is updated when it fluctuates by 1 point or more. (When progress is made in a short period of time, such as when Fast Rebuild is performed, the progress rate might be updated by several points rather than by 1 point.)

Remove the drive in the Drives list window or Drive detailed information window by either of the following means.

A drive can be removed when STATUS of the drive to be removed is "Blockage."

In the Drives list window, select the drive to be edited (1 to 25 drives), click the preceding icon to the right of the Monitor link icon, and then select Remove Drives.
Click the preceding icon displayed for the drive to be edited in the Drives list window (displayed as inventory view), and then select Remove Drives.
Click the preceding icon in the Drive detailed information window for the drive to be edited, and then select Remove Drives.

The drive removal dialog is displayed.

Verify the displayed information, and then click Submit.

The drive removal dialog is closed and drive removal is performed.

When the following "Completed" message is displayed, processing is completed.

Successfully removed drives.

In the Drives list window, verify STATUS of the faulty drive to be removed.

If STATUS of the drive is "Offline", go to the next step.

Back up the configuration information.

For details about the procedure, contact customer support.

If you continue operations with other procedures, you must back up the configuration information after you have completed all operations.

Note:

The information of a drive removed according to the steps described earlier is deleted from VSP One SDS Block.

Deletion of drive information from VSP One SDS Block might take approximately one minute.