Owners Manual

Table 27. Event descriptions and recommended actions (continued)
Number Severity Description/Recommended actions
Disk group reconstruction starts automatically. This event indicates that a problem reported by
event 8 is resolved.
Recommended actions:
● No action is required.
16 Info. The indicated disk has been designated a global spare.
Recommended actions:
● No action is required.
18 Error Disk group reconstruction completed with errors.
When a disk fails, reconstruction is performed using a spare disk. However, this operation failed.
Some of the data in the other disk(s) in the disk group is unreadable (uncorrectable media
error), so part of the data cannot be reconstructed.
Recommended actions:
● If you do not have a backup copy of the data, take a backup.
● 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.
Info. Disk group reconstruction completed.
For the ADAPT disk group that completed partially, either there is no available spare space, or
the spare space cannot be used because of ADAPT fault-tolerant requirements.
Recommended actions:
● No action is required.
19 Info. A rescan has completed.
Recommended actions:
● No action is required.
20 Info. Storage Controller firmware update has completed.
Recommended actions:
● No action is required.
21 Error Disk group verification completed. Errors were found but not corrected.
Recommended actions:
● No action is required.
Warning Disk group verification did not complete because of an internally detected condition such as a
failed disk. If a disk fails, data may be at risk.
Recommended actions:
● Resolve any non-disk hardware problems, such as a cooling problem or a faulty controller
module, expansion module, or power supply.
● Check whether any disks in the disk group have logged SMART events or unrecoverable read
errors.
○ If so, and the disk group is a non-fault-tolerant RAID level (RAID 0 or non-RAID), copy
the data to a different disk group and replace the faulty disks.
○ If so, and the disk group is 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 affected disk group, which will drain its data to another
disk group, and then re-add the disk group.
78 Events and event messages