HP ProLiant DL380 G5 Server - Manual (Page 45)

IMPORTANT: Never turn off a storage system when the attached system is still turned on.
• Check the physical proximity of the system to other electrical devices. Since electrical noise may cause this
error, check the AC circuit for other electrical devices.
Timeouts can be caused when two or more drives are set to the same SCSI ID. Ensure that the storage
system and system SCSI IDs do not conflict.
• On a storage system, check the SCSI ID cable on the drive tray. If the cable is damaged or incorrectly
installed, SCSI Timeouts can occur. See the documentation accompanying the Hot Plug Drive Tray Service
Spare Kit.
• Ensure that the system temperature is within specified limits. Ensure that the fans are operating and are not
blocked.
In some instances, drive failure can cause Timeouts. If you continue to receive many of these errors, replace
the drive.
• SCSI Bus Faults—Displays the number of times that SCSI bus parity, overrun, or underrun errors have been
detected on the SCSI bus. Since the controller retries the operation, SCSI bus faults can cause a drop in
performance, or, in some cases, data corruption.
If the count is not zero and the drive has failed, the failure might be correctable without replacing the drive.
Verify the status of the drive by checking the following:
• Ensure that all system and storage system cables are intact and seated properly. You may need to replace
the cables.
• Check the physical proximity of the system to other electrical devices. Since electrical noise may cause a
Bus Fault error, check the AC circuit for other electrical devices.
• Ensure that the system temperature is within specified limits. Ensure that fans are operating and are not
blocked.
SCSI Bus Faults can be caused when two or more drives are set to the same SCSI ID. Ensure that storage
system and system SCSI IDs do not conflict.
In some instances, drive failure can cause SCSI Bus Faults. If you continue to receive many of these errors,
replace the drive.
• IRQ Deglitch—Displays the number of times that a glitch has been detected on the drive interface cable. Since
the controller retries the operation, problems can cause a drop in performance or, in some cases, data
corruption. Glitches indicate electrical noise on the drive cable or an intermittent failure of the drive electronics.
This item is considered a Problem Indicator that may be correctable without replacing the drive. Verify the status
of the drive by checking the following:
• Ensure that all system and storage system cables are intact and seated properly. You may need to replace
cables.
• Check the physical proximity of the system to other electrical devices. Since electrical noise may cause a
glitch error, check the AC circuit for other electrical devices.
• If you continue to receive many of these errors, replace the drive.
Failure Indicators
Use the Failure Indicators to determine the cause of a drive failure. Typically, the number of failures is zero when the
drive is operating normally. If a counter is not zero and the drive has not failed, there could be an intermittent
problem that may require the drive to be replaced.
The Failure Indicators are:
• Spinup Errors—When the physical drive fails due to the failure of a spin-up command, a Spinup Error occurs. If
the failure count is not zero and the drive has failed, replace the drive.
If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires
drive replacement. If you observe that the count is increasing over time, replace the drive.
• Aborted Commands—The Aborted Commands counter records the number of times that a physical SCSI drive
returned an Aborted Command status when a SCSI command was attempted. This error count indicates
unsuccessful termination of the SCSI command. When the physical drive is failed due to aborted commands that
could not be retried successfully, Aborted Commands errors occur. If the number of errors is not zero and the
drive has failed, replace the drive.
If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires
drive replacement. If you observe that the count is increasing over time, replace the drive.
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