Operating Manual U42093-J-Z716-1-74
Basic Verification Troubleshooting
Basic Verification

Verify SCSI Bus Configuration

Problemswith SCSI bus configuration are common. Basic operation of the SCSI
buscan be checked by using the configuration menu to view attached SCSI
devices.See Chapter “Configuring the PSFR-CP41” for more information.
Otherconditions to look for include:
Termination– Problems with termination can cause intermittent or hard
failure.The SCSI bus must be terminated on both ends, and only both ends.
Terminationissues when both narrow and wide devices are on the same bus
are common.
BusType – Single-Ended devices cannot be mixed with Differentialdevices
on the same bus.Similarly, Single-Ended terminators cannot be used on
Differentialbuses, and Differential terminators cannot be used on a Single-
Ended bus.
DeviceID – Each device on a SCSI bus must have a unique ID.Also check
theconfigured ID’s for the PSFR-CP41 to verify these are not in use by other
deviceson the same SCSI bus.
Cabling– Check SCSI cables to verify they are functional. SCSI rules for
totallength, distance between devices, and stub length must be adhered to.
Connectionsshould also be checked and reseated if necessary.
SCSIDevices – Verify SCSI devices can be seen in the configuration menu
of the PSFR-CP41. Select” PerformConfiguration” from the first menu.
Then select”Fibre Channel to SCSIMapping Configuration.” SCSI devices
should be listed.If the PSFR-C P41can not see the devices, verify SCSI
configurationand cabling.