LSI 3ware 9750 User Manual page 266

Chapter 12. Troubleshooting
0029 Verify started
002A Verify failed
254
Event Type
Information
Cause
The 3ware RAID controller has started verifying the data integrity of a unit.
The verification functions for different RAID levels are as follows:
• Single. Verify = Media scan
• Verify = Media scan
RAID 0.
• Verify = Comparison of mirror sides
RAID 1 and 10.
• RAID 5, 6, and 50.
Action
Allow verify to complete to identify any possible data integrity issues.
See Also
For information on scheduling a verify process, see "Scheduling Background
Tasks" on page 163. For information on verification of a unit, see "About
Verification" on page 149.
Event Type
Error
Cause
Verification of a unit has terminated with an error. For each RAID level being
verified, this may mean:
• A single drive returned an error, possibly because of a media
Single.
defect.
• A single drive returned an error, possibly because of a media
RAID 0.
defect.
• One side of the mirror does not equal the other side.
RAID 1 and 10.
•
RAID 5, 6, and 50.
For any RAID type, the most likely cause of the error is a grown defect in the
drive. For out-of-synchronization mirrors or parity, the error could be caused
by improper shutdown of the unit. This possibility applies to RAID 1, 5, 6, 10,
and 50.
3ware SATA+SAS RAID Controller Card Software User Guide, Version 10.2
Verify = Comparison of parity data with user data
The parity data does not equal the user data.