HP 1850R - ProLiant - 128 MB RAM Troubleshooting Manual page 274

ADU Error Messages
Table D-1: Array Diagnostic Utility (ADU) Error Messages
Message
Unknown disable code
Unrecoverable read error
Warning bit detected
WARNING – Drive Write
Cache is enabled on X
WARNING: Storage enclosure
on SCSI bus X indicated it is
operating in single ended
mode.
SOLUTION: This usually
occurs when a single-ended
drive type is inserted into an
enclosure with other drive
types; and that makes the
entire enclosure operate in
single ended mode. To
maximize performance replace
the single-ended drive with a
type that matches the other
drives.
D-24
Description
A code was returned from the
array accelerator board that
ADU does not recognize.
Read parity errors were
detected when an attempt to
read the same data from both
sides of the mirrored memory
was made. Data loss will
occur.
A monitor and performance
threshold violation may have
occurred. The status of a
logical drive may not be OK.
Drive has its internal write
cache enabled. The drive may
be a third-party drive, or the
operating parameters of the
drive may have been altered.
Condition can cause data
corruption if power to the drive
is interrupted.
One or more single-ended
mode SCSI drives are installed
in an external storage unit that
operates in low-voltage
differential (LVD) mode.
continued
Recommended Action
Obtain the latest version of
ADU.
Replace the array accelerator
board.
Check the other error
messages for an indication of
the problem.
Replace the drive with a
supported drive, or restore the
operating parameter of the
drive.
The array continues to
operate, but installing all LVD
drives maximizes
performance.
HP Servers Troubleshooting Guide
continued