Service manual

Chapter 5 Troubleshooting
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B. Select the either the internal or external SCSI controller. The internal SCSI channel is
usually port 2000. Press <Enter>.
C. After the utility scans the channel, it will list SCSI devices detected. You may change the
transfer rate for a specific device by selecting it, or for the entire channel by changing the
controller. Make your selection and press <ENTER>.
D. Press <ENTER> on Sync Rate to select a new transfer rate.
E. Follow the prompts to save the new setting and exit the utility.
9. If a second hard disk drive is connected to the SCSI bus, check it for unique address selection,
SCSI cable connection, and power connection.
10. Check the SCSI bus cable for correct orientation, alignment, and seating on the SCSI adapter
and the SCSI device.
à
àà
à Check for the correct Hewlett-Packard internal and external SCSI cables.
11. Check that all SCSI devices are connected to power and power-on all SCSI devices before or at
the same time as the system to ensure a stable SCSI bus.
12. If a valid device is found at device address 0, but not at address 1, you would see these device
validation lines:
"Channel x, SCSI ID #n - id info - Drive C: (80h)"
Do the following:
A. Verify that the SCSI hard disk drive is set to address 1.
B. Check the SCSI bus cable for correct orientation, alignment, and seating on the host adapter
and the hard disk drive.
C. Check that terminators are installed at each end of the SCSI bus, but not on any other
devices. The SCSI cable that comes with the server includes a built-in terminator. The hot
swap cage printed circuit board has automatic termination, which disconnects when a cable
is attached.
D. Verify that all SCSI devices are single-ended SCSI and that no differential SCSI devices
have been added to the bus.
13. If the server still fails to recognize the SCSI drive, disconnect all SCSI devices except the host
adapter and the drive at SCSI address 0 and try again. If the system fails, try substituting a
known good hard disk drive.
14. If the SCSI BIOS has properly identified device 0 and has installed it as drive C, but cannot find
a device at address 1, and in addition, if no further messages are displayed, it indicates the
server cannot load the operating system from device 0, check the following:
A. If a second hard disk drive is connected to the SCSI bus, check it for proper address
selection, SCSI cable connection, and proper power.
B. Check the disk partition.
C. Partition the hard disk drive if required.
15 Use only SCSI devices that do not include terminators.
The HP NetServer embedded SCSI controllers are terminated automatically on the hot swap
cage or at the end of the SCSI cable. If you are installing a SCSI device that uses a built-in
terminator, you must remove the terminator from the device before proceeding with the
installation.
Use only the HP NetServer Series SCSI cables for the SCSI subsystem.