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Diagnostics and Troubleshooting
Troubleshooting
Troubleshooting
Installation
4
Problems
50
ValueLoader DLT VS80/DLT VS160 Tape Autoloader User Manual
Problems encountered during the installation of the ValueLoader
are usually caused by improper SCSI bus configuration,
application software configuration errors, or an incorrectly
configured operating system. If the application software that you
are using is not communicating with the ValueLoader after
installation, check the following:
•
The ValueLoader uses one SCSI ID and two Logical
SCSI ID:
Unit Numbers (LUNs): one LUN for the tape drive (0) and one
for the ValueLoader robotics (1). Depending on other devices
attached to the same SCSI bus and their SCSI IDs, you may
need to change the SCSI ID of the ValueLoader before you can
use the ValueLoader. Select an unused SCSI ID. See the
manuals for the other devices on the SCSI bus or your
operating system to determine which SCSI IDs are currently in
use. If the ValueLoader is attached to a narrow (50-pin) SCSI
bus, only SCSI IDs 0 through 7 are available. See
SCSI ID
on page 40.
•
Verify that all SCSI cables are securely connected
SCSI Cabling:
at both ends. Check the length and integrity of your SCSI
cabling. The total length of all cables connected to a SCSI bus
must not exceed 19 feet (6 meters) for a SCSI-1 SE bus, 10 feet (3
meters) for a Fast SCSI (Narrow or Wide) or an Ultra SCSI
(Narrow or Wide) SE bus, 40 feet (12 meters) for an LVD bus
with multiple devices, or 82 feet (25 meters) for an LVD bus
with a single device. The length of the internal SCSI cabling
inside the ValueLoader is 1 foot (30 cm). This length must be
included in any calculations of cable length. Try replacing
suspect cables with known good cables.
•
If the ValueLoader is the only SCSI device (other
Termination:
than the SCSI host adapter) on the selected SCSI bus, it must be
terminated. Likewise, if the ValueLoader is physically the last
SCSI device on the SCSI bus, it must be terminated. Only the
devices physically at the beginning and end of the SCSI bus
4
Changing the
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Troubleshooting
