Number Severity Description/Recommended actions
52 Info. Disk group expansion has started.
This operation can take days, or weeks in some cases, to complete. Allow adequate time for the expansion to
complete.
When complete, event 53 is logged.
Recommended actions:
• No action is required.
53 Warning Too many errors occurred during disk group expansion to allow the expansion to continue.
Recommended actions:
• If the expansion failed because of a disk problem, replace the disk with one of the same type (SSD,
enterprise SAS, or midline SAS) and the same or greater capacity. For continued optimum I/O
performance, the replacement disk should have performance that is the same as or better than the one it
is replacing. If disk group reconstruction starts, wait for it to complete and then retry the expansion.
Info. Disk group expansion either completed, failed immediately, or was aborted by a user.
Recommended actions:
• If the expansion failed because of a disk problem, replace the disk with one of the same type (SSD,
enterprise SAS, or midline SAS) and the same or greater capacity. For continued optimum I/O
performance, the replacement disk should have performance that is the same as or better than the one it
is replacing. If disk group reconstruction starts, wait for it to complete and then retry the expansion.
55 Warning The indicated disk reported a SMART event.
A SMART event indicates impending disk failure.
Recommended actions:
• Resolve any non-disk hardware problems, especially a cooling problem or a faulty power supply.
• If the disk is in a disk group that uses a non-fault-tolerant RAID level (RAID 0 or non-RAID), copy the data
to a dierent disk group and replace the faulty disk.
• If the disk is in a disk group that uses a fault-tolerant RAID level, check the current state of the disk group.
If it is not FTOL then back up the data as data may be at risk. If it is FTOL then replace the indicated disk.
If more than one disk in the same disk group has logged a SMART event, back up the data and replace
each disk one at a time. In virtual storage it may be possible to remove the aected disk group, which will
drain its data to another disk group, and then re-add the disk group.
56 Info. A controller has powered up or restarted.
Recommended actions:
• No action is required.
58 Error A disk drive detected a serious error, such as a parity error or disk hardware failure.
Recommended actions:
• Replace the failed disk with one of the same type (SSD, enterprise SAS, or midline SAS) and the same or
greater capacity. For continued optimum I/O performance, the replacement disk should have performance
that is the same as or better than the one it is replacing.
Warning A disk drive reset itself due to an internal logic error.
Recommended actions:
• The rst time this event is logged with Warning severity, if the indicated disk is not running the latest
rmware, update the disk rmware.
• If this event is logged with Warning severity for the same disk more than ve times in one week, and the
indicated disk is running the latest rmware, replace the disk with one of the same type (SSD, enterprise
Events and event messages 87
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