Dell PowerVault ME5 Series Owner's Manual page 107

Table 28. Event descriptions and recommended actions (continued)
Number Severity
477 Info.
478 Info.
479 Error
480 Error
481 Error
482 Warning
Description/Recommended actions
● Check that the storage system's fans are running.
● Check that the ambient temperature is not too warm. The controller enclosure operating
range is 5°C to 35°C (41°F to 95°F). The expansion enclosure operating range is 5°C to
40°C (41°F to 104°F).
● Check for any obstructions to the airflow.
● Check that there is a module or blank plate in every module slot in the enclosure.
● If none of these recommended actions resolve the issue, replace the controller module that
logged the error.
When the problem is resolved, event 478 is logged.
The CPU temperature exceeded the normal range so the CPU speed was reduced. IOPS were
reduced.
The storage system is operational but I/O performance is reduced.
Recommended actions:
● Check that the storage system's fans are running.
● Check that the ambient temperature is not too warm. The controller enclosure operating
range is 5°C to 35°C (41°F to 95°F). The expansion enclosure operating range is 5°C to
40°C (41°F to 104°F).
● Check for any obstructions to the airflow.
● Check that there is a module or blank plate in every module slot in the enclosure.
● If none of these recommended actions resolve the issue, replace the controller module that
logged the error.
When the problem is resolved, event 478 is logged.
A problem reported by event 476 or 477 is resolved.
Recommended actions:
● No action is required.
The controller reporting this event was unable to flush data to or restore data from non-volatile
memory.
This mostly likely indicates a eMMC failure, but it could be caused by some other problem with
the controller module. The Storage Controller that logged this event will be killed by its partner
controller, which will use its own copy of the data to perform the flush or restore operation.
Recommended actions:
● If this is the first time this event has been logged, restart the killed Storage Controller.
● If this event is then logged again, replace the eMMC.
● If this event is then logged again, shut down the Storage Controller and replace the
controller module.
An IP address conflict was detected for the indicated iSCSI port of the storage system. The
indicated IP address is already in use.
Recommended actions:
● Contact your data-network administrator to help resolve the IP address conflict.
The periodic monitor of eMMC hardware detected an error. The controller was put in write-
through mode, which reduces I/O performance.
Recommended actions:
● Restart the Storage Controller that logged this event.
● If this event is logged again, shut down the Storage Controller and replace the eMMC.
● If this event is logged again, shut down the Storage Controller and replace the controller
module.
One of the PCIe buses is running with fewer lanes than it should.
This event is the result of a hardware problem that has caused the controller to use fewer lanes.
The system works with fewer lanes, but I/O performance is degraded.
Events and event messages 107