Events (continued)
Number Severity Description/Recommended actions
550 Critical The read data path between the Storage Controller and the disk drives was detected to be unreliable. The
Storage Controller took action to correct this.
Recommended actions:
• Replace the controller.
551 Error An EMP reported one of the following for a power supply unit (PSU):
• The PSU is unable to communicate with the EMP.
• The PSU in an enclosure does not have power supplied to it or has a hardware failure.
• The PSU is running with corrupted firmware.
Recommended actions:
• If the EMP is unable to communicate with the indicated PSU:
• Wait for at least 10 minutes and check if the error resolves.
• If the error persists, check that all modules in the enclosure are fully seated in their slots and that their
latches, if any, are locked.
• If this does not resolve the issue, note down the PSU. Ensure the partner PSU is not degraded. If the
partner PSU is degraded, contact technical support.
• If the partner PSU is not degraded, remove and reinsert the indicated PSU..
• If this does not resolve the issue, the indicated FRU has probably failed and should be replaced.
• If one of the PSUs in an enclosure does not have power supplied to it or has a hardware failure:
• Check that the indicated PSU is fully seated in its slot and that the PSU's latches, if any, are locked.
• Check that each PSU has its switch turned on (if equipped with a switch).
• Check that each power cable is firmly plugged into both the PSU and a functional electrical outlet.
• If none of these recommended actions resolve the issue, the indicated PSU has probably failed and
should be replaced.
• If a PSU is running with corrupted firmware:
• The indicated PSU has failed and should be replaced.
When the problem is resolved, an event with the same code will be logged with Resolved severity.
Warning
An EMP reported that a power supply unit (PSU) has been uninstalled.
Recommended actions:
• Check that the indicated PSU is in the indicated enclosure.
• If the PSU is not in the enclosure, install a PSU immediately.
• If the PSU is in the enclosure, ensure that the power supply is fully seated in its slot and that its latch is
locked.
• If none of these recommended actions resolves the issue, the indicated FRU has failed and should be
replaced.
When the problem is resolved, an event with the same code will be logged with Resolved severity.
Resolved A SES alert for a power supply in the indicated enclosure has been resolved.
Recommended actions:
• No action is required.
552 Error An EMP reported an alert condition.
• A hardware failure has been detected and all fans in the indicated FRU have failed.
• The fan is unable to communicate with the EMP.
Recommended actions:
If a fan in the indicated FRU has been uninstalled:
Events and event messages 117
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