Table 28. Event descriptions and recommended actions (continued)
Number Severity Description/Recommended actions
540 Info. The indicated volume, which was corrupted, has been recovered.
Recommended actions:
● After verifying volume recovery, complete disk group recovery by running the 'recover disk-
group complete' command.
541 Info. For the indicated disk group, which was corrupted, the 'complete' step of the disk group
recovery succeeded.
Recommended actions:
● No action is required.
544 Info. A disk group scrub operation exceeded its duration goal by 20%.
The system will attempt to meet the scrub duration goals by adjusting system resources, but
factors such as the amount of data or abnormally high host activity may cause scrub operations
to exceed the requested duration.
Recommended actions:
● If this event occurs repeatedly, the scrub duration goal should be increased to increase the
likelihood that the goal can be met.
545 Warning A controller module is connected to a legacy enclosure midplane, resulting in degraded
performance.
Recommended actions:
● To achieve better performance, replace the enclosure’s legacy chassis FRU with the latest
version of the FRU.
546 Error The controller that logged this event killed the partner controller which has an incompatible host
port configuration.
Recommended actions:
● Replace the killed controller module with a controller module that has the same host port
configuration as the surviving controller module.
548 Warning Disk group reconstruction failed.
When a disk fails, reconstruction is performed using a spare disk. In this case, the reconstruction
operation failed because unreadable data (uncorrectable media error) exists in at least one other
disk in the disk group. Because of this, a portion of the data cannot be reconstructed.
Recommended actions:
● If you do not have a backup copy of the data in the disk group, make a backup.
● Note the configuration of the disk group, such as its size and host mappings.
● Look for another event logged at approximately the same time that indicates a disk failure,
such as event 8, 55, 58, or 412. Follow the recommended actions for that event.
●
Remove the disk group.
● Re-add the disk group.
● Restore the data from the backup to a new disk group.
549 Critical The indicated controller module detected that it recovered from an internal processor fault.
Recommended actions:
● Replace the controller module.
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.
Events and event messages 115
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