Online/activity LED

Fault/UID LED

Interpretation

(green)

(amber/blue)

 

 

 

 

Flashing regularly

Amber, flashing

Do not remove the drive. Removing a drive may

(1 Hz)

regularly (1 Hz)

terminate the current operation and cause data loss.

 

 

The drive is part of an array that is undergoing capacity

 

 

expansion or stripe migration, but a predictive failure alert has

 

 

been received for this drive. To minimize the risk of data loss, do

 

 

not replace the drive until the expansion or migration is

 

 

complete.

Flashing regularly

Off

Do not remove the drive. Removing a drive may

(1 Hz)

 

terminate the current operation and cause data loss.

 

 

The drive is rebuilding, or it is part of an array that is undergoing

 

 

capacity expansion or stripe migration.

 

 

 

Flashing irregularly

Amber, flashing

The drive is active, but a predictive failure alert has been

 

regularly (1 Hz)

received for this drive. Replace the drive as soon as possible.

Flashing irregularly

Off

The drive is active, and it is operating normally.

 

 

 

Off

Steadily amber

A critical fault condition has been identified for this drive, and

 

 

the controller has placed it offline. Replace the drive as soon as

 

 

possible.

 

 

 

Off

Amber, flashing

A predictive failure alert has been received for this drive.

 

regularly (1 Hz)

Replace the drive as soon as possible.

Off

Off

The drive is offline, a spare, or not configured as part of an

 

 

array.

 

 

 

Recognizing hard drive failure

A steadily glowing Fault LED indicates that that drive has failed. Other means by which hard drive failure is revealed are:

•The amber LED on the front of a storage system illuminates if failed drives are inside. (However, this LED also illuminates when other problems occur, such as when a fan fails, a redundant power supply fails, or the system overheats.)

•A POST message lists failed drives whenever the system is restarted, as long as the controller detects at least one functional drive.

•ACU represents failed drives with a distinctive icon.

•Systems Insight Manager can detect failed drives remotely across a network. (For more information about Systems Insight Manager, refer to the documentation on the Management CD.)

•ADU lists all failed drives.

For additional information about diagnosing hard drive problems, refer to the HP Servers Troubleshooting Guide.

CAUTION: Sometimes, a drive that has previously been failed by the controller may seem to be operational after the system is power-cycled or (for a hot-pluggable drive) after the drive has been removed and reinserted. However, continued use of such marginal drives may eventually result in data loss. Replace the marginal drive as soon as possible.

Replacing, moving, or adding hard drives 27