3Ware 8006-2LP - Escalade RAID Controller, Manual

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Troubleshooting: Problems and Solutions
102 3ware Escalade ATA RAID Controller User Guide
AEN 004h AEN_REBUILD_FAIL
The
ATA RAID controller
was unable to complete a rebuild operation.
This error can be caused by drive errors on either the source or the des-
tination of the rebuild. However, due to ATA drives ability to reallocate
sectors on write errors, the rebuild failure is most likely caused by the
source drive of the rebuild detecting some sort of read error. The
default operation of the
ATA RAID controller
is to abort a rebuild if an
error is encountered. If it is desired to continue on error, the Ignore
errors on rebuild radio button can be checked prior to initiating a
rebuild.
AEN 005h AEN_REBUILD_DONE
The ATA RAID controller has successfully completed a rebuild. The comple-
tion of the rebuild changes the state of the array from rebuilding to OK. The
data is now redundant.
AEN 006h AEN_INCOMP_UNIT
At power on initialization time, the ATA RAID controller performs a “roll-
call” of all drives attached to the card. After detection of the drives, the ATA
RAID controller then uses an internal algorithm to logically connect drives
that belong to the same array. If after rollcall a member of an array is not
found, the
INCOMPLETE UNIT AEN is sent. Examples of incomplete
units are as follows:
■
4 drive RAID 5 with 1 drive missing.
■
2 drive RAID 1 with 1 drive missing.
Replacing the missing or dead drive and initiating a rebuild will change the
state of the array from an incomplete unit to OK.
AEN 007h AEN_INIT_DONE
The ATA RAID controller has completed the initialization sequence and per-
forms the initialization step at array creation time of RAID levels 1, 10 and 5.
For RAID 5, the data on the array is read and the resultant parity is written to
the parity area on the array. For RAID 1 and 10, one half of the mirror is cop-
ied to the other half (mirrors are synchronized).
AEN 008h AEN_UNCLEAN_SHUTDOWN
The ATA RAID controller has the ability to detect if the system has been shut-
down via the standard shutdown mechanism of the operating system (clean
shutdown). If the system loses power or is reset without going through the
normal shutdown procedure, it is possible that the data on a redundant array
may be out of synchronization. The unclean shutdown detection will detect