Online/Activity | Fault/UID LED | Interpretation |
LED (green) | (amber/blue) |
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On | Off | The drive is online, but it is not active currently. |
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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. |
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| The drive is part of an array that is undergoing capacity |
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| expansion or stripe migration, but a predictive failure alert has |
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| been received for this drive. To minimize the risk of data loss, do |
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| not replace the drive until the expansion or migration is |
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| complete. |
Flashing regularly | Off | Do not remove the drive. Removing a drive may |
(1 Hz) |
| terminate the current operation and cause data loss. |
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| The drive is rebuilding, or it is part of an array that is undergoing |
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| capacity expansion or stripe migration. |
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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. |
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Off | Steadily amber | A critical fault condition has been identified for this drive, and |
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| the controller has placed it offline. Replace the drive as soon as |
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| possible. |
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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 |
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| array. |
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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
Replacing, moving, or adding hard drives 23