Chapter 12. Troubleshooting
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3ware Serial ATA RAID Controller User Guide
0022 Upgrade UDMA mode
During the self-test, if a drive is found to not be in the optimal UDMA mode,
the controller will upgrade its UDMA mode to be optimal.
0023 Sector repair completed
The 3ware RAID controller supports a feature called dynamic sector repair to
allow the unit to recover from certain drive errors that would normally result
in a degraded unit situation. For redundant units such as RAID 1, 10, 50, and
5, the 3ware RAID controller essentially has two copies of your data
available. If a read command to a sector on a disk drive results in an error, it
reverts to the redundant copy in order to satisfy the host’s request. At this
point, the 3ware RAID controller has a good copy of the requested data in its
cache memory. It will then use this data to force the failing drive to reallocate
the bad sector, which essentially repairs the sector. When a sector repair
occurs, you are notified by this message.
The fact that a sector repair message has been sent to you is an indication of
the presence of grown defects on a particular drive. While typical modern disk
drives are designed to allow several hundred grown defects, special attention
should be paid to any drive in a unit that begins to indicate sector repair
messages. This may be an indication of a drive that is beginning to fail. You
may wish to replace the drive, especially if the number of sector repair errors
exceeds 3 per month.
0024 Sbuf memory test failed
The 3ware RAID controller, as part of its data integrity features, performs
diagnostics on its internal RAM devices. Once a day, a non-destructive test is
performed on the cache memory. Failure of the test indicates a failure of a
hardware component on the 3ware RAID controller. This message is sent to
notify you of the problem. If the controller is still under warranty, contact
3ware Technical Support for a replacement controller.
0025 Cache flush failed; some data lost
To improve performance, the 3ware RAID controller features caching layer
firmware. For write commands this means that it acknowledges it has
completed a write operation before the data is committed to disk. If the 3ware
RAID controller can not commit the data to the media after it has
acknowledged to the host, this message is posted.
Typically, the Cache Flush Failed notification would be an indication of a
catastrophic failure of the drives in the unit, such as loss of power to multiple
drives in a unit.
To troubleshoot the reasons for the failure, collect the logs for your system
and contact 3ware technical support at
http://www.3ware.com/support/
