User`s guide

Problem Solving and Troubleshooting
11-8
Problem Possible Cause Action
Server does not
recognize an
external SCSI
device.
SCSI device jumpers
incorrectly set.
SCSI ID conflicts.
Terminating resistors not
removed from the SCSI
device.
Storage backplane
incorrectly terminated.
SCSI host adapter has failed.
Loose SCSI cable.
SCSI cable incorrectly
installed between SCSI host
adapter and rear panel
connector or external SCSI
device and rear panel
connector.
SCSI device has failed.
Refer to the supplied kit installation
instructions.
Refer to the supplied kit installation
instructions and to the storage backplane
jumper configuration in Chapter 7.
Remove terminating resistors. Refer to the
supplied kit installation instructions.
Properly terminate the storage backplane.
Refer to Chapter 9.
Contact your Digital service
representative.
Secure all cable connections.
Refer to Chapter 9 for cabling information.
Replace SCSI device.
continued