Channel x, Scsi ID #n id info Drive C 80h

Chapter 5

Troubleshooting

12.Check that all SCSI devices are connected to power and power-on all SCSI devices before or at the same time as the HP NetServer to ensure a stable SCSI bus.

13.Watch the boot screen for all SCSI devices to be displayed. For example, in a system with 1 SCSI controller and 2 hard disk drives (one with ID 0 and one with ID 1), if a valid device is found at device address 0, but not at address 1, you would see these device validation lines on the boot screen:

Channel x, SCSI ID #n - id info - Drive C: (80h)

If you see this message:

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.Verify that terminators are installed at each end of the SCSI bus, but not on any other devices. The hot swap cage printed circuit board has automatic termination that disconnects when a cable is attached.

d.Verify that all SCSI devices on the bus are appropriate for that bus (only single-ended SCSI devices on the single-ended bus, only differential SCSI devices on the differential bus).

14.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.

15.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.

16.Use only SCSI devices without built-in terminators.

The HP NetServer embedded 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 SCSI cables for the SCSI hot swap subsystem.

17.Check that all SCSI devices LVD (low voltage differential) SCSI and that no SE (single-ended) SCSI devices have been added to the bus.

Hot-swap drives shipped by HP are set for LVD operation. Drives set for SE operation may used, but they will slow down the transfer rate considerably. Please refer to the user documentation for the device to determine which device you are using.

CAUTION Don't use high voltage differential SCSI devices, they can destroy circuitry on LVD and SE devices.

18.Disconnect all SCSI devices except the SCSI adapter and the drive at SCSI address 0, and try again. If this fails, try substituting a known good SCSI adapter and disk drive.

19.Use the Setup Utility to check for resource conflicts, especially if new boards or accessories have been added.