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Troubleshooting
A SCSI Device Stops Working
If a SCSI device stops working:
1. Verify it banners on POST or is seen in the SCSISelect Utility.
2. If an accessory board was added recently, check for a resource conflict between the new
board and an existing accessory boards.
a. Remove the board and restart the HP server.
b. If this corrects the problem, the new board is either defective or it is trying to use a
system resource used by another SCSI controller board.
c. Try the accessory board in another slot.
3. Check for any recent changes or upgrades to the software. For example, has anyone
moved, removed, or changed the configuration files or drivers? Refer to the software
documentation for more information.
4. If you suspect hardware failure and there are no system error messages, check each
component associated with the failure. Equipment failure is probably the most unlikely
reason for a SCSI device failure.
Contact the HP Customer Support Center for further troubleshooting assistance before
replacing any parts.
A SCSI Device Does Not Work after Installation
NOTE:
The SCSI controller board supplied with some HP servers come with a single channel SCSI
controller board and cannot support internal and external SCSI devices on the same controller.
NOTE:
Refer to the documentation provided with the SCSI device for any specific information
regarding installation.
If a SCSI device does not work after installation, do the following:
1. If using a single channel SCSI controller for external devices, be sure no internal devices
are connected on the internal channel of the SCSI controller. HP does not support using
both internal and external connections on a single-channel controller, and a second SCSI
controller board must be purchased for use with the external SCSI device.
2. Verify the SCSI BIOS is being executed properly. The internal and external SCSI device
controllers display a banner during startup. The BIOS then checks for valid devices on
the SCSI bus, and reports which devices are found. If the SCSI devices are installed and
configured correctly, a list confirming the devices will banner on POST after the
controller banners.
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HP ProLiant ML150 Server Operations and Maintenance Guide
HP CONFIDENTIAL
Codename: Stone Soup Part Number: 343329-001 Last Saved On: 8/14/03 10:25 AM