System Overview

• Server: Dell PowerEdge R610
• RAID Controller: PERC 6/i
• RAID Level: RAID 10 (six-disk configuration)
• Issue: One physical drive failed

RAID 10 can continue operating in a degraded state when a single drive has failed. To maintain data redundancy and performance, the failed drive should be replaced as soon as possible.

Step 1: Confirm the Drive Failure

Use Dell OpenManage Server Administrator (OMSA) or the server’s front panel indicators to verify the failure.

In OMSA, check the following:

• One drive is listed as Failed
• The Virtual Disk status is Degraded

If the array is currently rebuilding, wait for the rebuild to complete before replacing a drive.

Step 2: Check for Background Tasks

A synchronized blinking green activity light across all drives often indicates a background maintenance operation, such as:

• Consistency Check
• Patrol Read
• Initialization

These processes can run while the system is in use. If possible, allow them to complete before replacing the failed drive, but replacing a failed drive during a Consistency Check is generally acceptable on RAID 10.

Step 3: Hot-Swap the Failed Drive

The R610 chassis supports hot-swapping.

1. Identify the failed drive by the amber indicator and confirm its slot in OMSA.
2. Press the release mechanism and remove the failed drive.
3. Insert the replacement drive firmly until fully seated.

The PERC controller will detect the new drive automatically.

Foreign Configuration Note

If the replacement drive contains residual RAID configuration data from a previous system, the controller may mark the drive as Foreign. If this occurs:

1. In OMSA, open Storage and locate the Foreign Configuration section.
2. Select Clear Foreign.
3. Initiate the rebuild if it does not begin automatically.

In many cases, the rebuild starts without manual intervention.

Step 4: Monitor the Rebuild

In OMSA, verify:

• The replacement drive status changes to Rebuilding
• All other drives show Online
• The virtual disk shows Degraded during the rebuild

Rebuild time varies depending on workload and drive capacity. Avoid restarting the server until the rebuild is complete.

Step 5: Confirm Completion

When the rebuild is finished, the virtual disk status should update to Optimal, indicating full redundancy has been restored.

Summary

The replacement process on a PERC 6/i-based system is straightforward:

• Confirm the failed drive
• Remove and replace the drive
• Allow the RAID controller to rebuild the array

Maintaining current backups is recommended for any RAID maintenance procedure. Keeping a compatible spare drive available can reduce the time the system remains in a degraded state.

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