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Table 3-18, ADU Diagnostic Messages

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Diagnostics and Troubleshooting 3-33 Table 3-18 ADU Diagnostic Messages continued Message Description Accelerator status: Cache was automatically configured during last controller reset. Cache board is replaced with one of a different size. Accelerator status: Data in the cache was lost due to some reason other than the battery being discharged Data in the cache were lost but not because of the battery being discharged. Accelerator status: Dirty data detected has reached limit. Cache still enabled, but writes no longer being posted The number of cache lines containing dirty data that cannot be flushed (written) to the drives has reached a preset limit. The cache is still enabled, but writes are no longer being posted. The error usually occurs when there is a problem with the drive. Accelerator status: Dirty data detected. Unable to write dirty data to drives At least one cache line contains dirty data that the controller has been unable to flush (write) to the drives. The problem usually occurs when there is a problem with the drive. Accelerator status: Excessive ECC errors detected in at least one cache line. As a result, at least one cache line is no longer in use At least one line in the cache is no longer in use because of excessive ECC errors detected during use of the memory for that cache line. Accelerator status: Obsolete data detected During reset initialization, obsolete data were found in cache because of drives being moved and written to by another controller. Accelerator status: Obsolete data was discarded During reset initialization obsolete data were found in the cache and discarded (not written to drives). Recommended Action Normal operations should continue. Ensure that the array accelerator is properly seated. If the error continues, you may need to replace the array accelerator. Resolve problem with the drive. The controller will then be able to write dirty data to drives, and posted write operations will be restored. Resolve the problem with the drive. The controller will then be able to write dirty data to the drives. Replacement of cache should be considered. If cache replacement is not done the remaining cache lines should continue to operate properly. Normal operations should continue. The controller will either write data to the drives or discard the data completely. Normal operations should continue. continued

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Diagnostics and Troubleshooting
3-33
Table 3-18
ADU Diagnostic Messages
continued
Message
Description
Recommended Action
Accelerator
status: Cache
was
automatically
configured
during last
controller reset.
Cache board is replaced with one of
a different size.
Normal operations should continue.
Accelerator
status: Data in
the cache was
lost due to some
reason other
than the battery
being discharged
Data in the cache were lost but not
because of the battery being
discharged.
Ensure that the array accelerator is properly
seated. If the error continues, you may need to
replace the array accelerator.
Accelerator
status: Dirty data
detected has
reached limit.
Cache still
enabled, but
writes no longer
being posted
The number of cache lines containing
dirty data that cannot be flushed
(written) to the drives has reached a
preset limit. The cache is still
enabled, but writes are no longer
being posted. The error usually
occurs when there is a problem with
the drive.
Resolve problem with the drive. The controller
will then be able to write dirty data to drives,
and posted write operations will be restored.
Accelerator
status: Dirty data
detected. Unable
to write dirty
data to drives
At least one cache line contains dirty
data that the controller has been
unable to flush (write) to the drives.
The problem usually occurs when
there is a problem with the drive.
Resolve the problem with the drive. The
controller will then be able to write dirty data to
the drives.
Accelerator
status: Excessive
ECC errors
detected in at
least one cache
line. As a result,
at least one
cache line is no
longer in use
At least one line in the cache is no
longer in use because of excessive
ECC errors detected during use of the
memory for that cache line.
Replacement of cache should be considered. If
cache replacement is not done the remaining
cache lines should continue to operate properly.
Accelerator
status: Obsolete
data detected
During reset initialization, obsolete
data were found in cache because of
drives being moved and written to by
another controller.
Normal operations should continue. The
controller will either write data to the drives or
discard the data completely.
Accelerator
status: Obsolete
data was
discarded
During reset initialization obsolete
data were found in the cache and
discarded (not written to drives).
Normal operations should continue.
continued