1 HV Installation and Operations Guide

Chapter 8 Diagnosing Problems 193

Chapter 8

— Device ID: Each device on a SCSI bus must have a unique ID. The

default SCSI ID of the bridge is 7. Make sure that this ID is not in use

on the bus. Check the library or MO jukebox user guide for the

default SCSI IDs. Verify that other IDs on the bus are not in conflict.

— Cabling: Check SCSI cables to verify that they are functional. Be sure

the maximum cable length on the differential cable connected to the

bridge does not exceed a total of 25 meters. Make sure that the SCSI

cables are qualified for operation at the intended data rate. Check all

cable connections and pins on the connectors. Reseat the connections

if necessary.

7. Verify SCSI bus operation: Use the serial connection between the

Windows NT host and the bridge. See Chapter 4 for default settings and

for steps to initiate the following procedures:

— Perform a bridge self-test.

— Verify device locations using the Fibre Channel to SCSI mapping

menu. See Fibre Channel-to-SCSI Mapping on page 95.

Note If you experience communication difficulty with the bridge,

confirm that the terminal emulation software (Hyperterminal, or

similar) has been configured properly. See Chapter 4 for more

information.

8. Verify bridge configurations: Configuration changes may result in an

invalid configuration. Try the default bridge configurations settings, as they

have been chosen to work in most cases.

If you are in doubt about the configuration, refer to Chapter 4. If this

procedure fails, contact an HP service representative.

9. Verify devices: If the previous diagnostic procedures have not resulted in a

functional connection between the bridge and each device, use the

following steps:

— Connect the library or MO jukebox to a SCSI HBA on the host and

restart the host. Verify functionality with the SCSI connection.

— Confirm that the library or MO jukebox is visible in the SCSI adapters

folder of the control panel.

— Confirm that there are no error indicators illuminated on the front

panel of the library or MO jukebox.