3Ware 7000-2 - Escalade RAID Controller, User Manual

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3ware Escalade ATA RAID Controller User Guide
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• RAID 10. Verify = Compare of Mirror Sides
• RAID 5. Verify = Parity Data = User Data
When the verification starts, this AEN is posted to the user.
AEN 02Ah AEN_VERIFY_FAILED
This AEN indicates that the data integrity verification function (see
AEN 029h) has terminated with an error. For each RAID level
being verified, this may mean:
• JBOD. A single drive returned an error, possibly because of a
media defect.
• RAID 0. A single drive returned an error, possibly because of a
media defect.
• RAID 1. One side of the mirror does not equal the other side.
• RAID 10. One side of the mirror does not equal the other side.
• RAID 5. The parity data does not equal the user data.
For JBOD and RAID 0, the most likely cause of the error is a grown
defect in the drive. For out-of-synchronization mirrors, the error
could be caused by improper shutdown of the array. This possibility
applies to RAID 1, 10 and 5. A rebuild will re-synchronize the
array.
AEN 02Bh AEN_VERIFY_DONE
This AEN indicates the data integrity verification function (see
AEN 029h) was completed successfully. No errors were encoun-
tered.
AEN 02Ch AEN_SECTOR_OVERWRITE
If a read error is encountered during a rebuild and the user chooses
to ignore the error, the sector in error is reallocated. The user is
notified of the event by this AEN.