Hardware Problems
HP Servers Troubleshooting Guide
2-31
HP CONFIDENTIAL
Writer: Ted Weiman File Name: c-ch2 Hardware Problems.doc
Codename: Generic TSG Part Number: 161759-007 Last Saved On: 11/19/02 9:31 AM
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You must follow the server cabling guidelines when configuring your array to
implement the best possible cabling solution for your server.
Refer to your server-specific user documentation for step-by-step instructions.
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Check for cabling configurations that are not supported. Signal integrity errors
can be injected into the SCSI bus when an active drive is hot-plugged.
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Be sure that a drive is not currently being used to recover from errors, such as
media errors or signal integrity errors, to other drives in the array.
CAUTION:
In extreme cases, when the number of errors is greater than the
firmware error recovery is able to sustain, connecting a hot-plug online drive can
cause some unrecoverable errors to be reported to the operating system or can
cause a complete failure of the array. Refer to your operating system
documentation for more information on implications, as well as possible recovery
options.
IMPORTANT:
Before replacing a degraded drive, use Insight Manager 7 (or previous
version) to examine the error counters recorded for each physical drive in the array to be
sure that such errors are not presently occurring. Refer to the documentation on the
Management CD.
Tape Drives
DLT Drives
Use Table 2-12 to troubleshoot Digital Linear Tape (DLT) drive problems.
Table 2-12: Tape Drive Problems
Problem Possible
Cause Possible
Solution
Drive is not clean.
Clean the drive. Refer to the instructions
provided with the drive.
Server cannot write to
tape.
Tape is not compatible
with drive.
Check the tape specifications to be sure
that the tapes are designed to work with
the drive.
continued
