Dell PowerVault 110T DLT1 Drive User Manual page 28

Troubleshooting: Dell PowerVault 110T DLT VS160 Tape Drive User's Guide
The SCSI bus might be improperly
terminated.
The SCSI terminator might not be
at the end of the SCSI bus or more
than two terminators might be
present on the SCSI bus.
The SCSI host adapter might be in
a defective expansion slot.
The SCSI bus might be too long.
There are fatal or The SCSI bus might be improperly
nonfatal errors for terminated.
which you cannot
find the cause.
The AC power source may not be
properly grounded (PowerVault
110T DLT VS160 Tape External
drive only).
The backup Application not compatible or
application does improper device drivers installed.
file:///C|/Users/rishi_sood/Desktop/Temp/MissingDocsPosted/110t_dlt/UG/trouble.htm[3/8/2013 11:46:14 AM]
2. Make sure an active LVD/SE terminator is in place on the SCSI
ribbon cable for the internal drive.
1. If the PowerVault 110T DLT VS160 Tape drive is the last or
only device on the SCSI bus, make sure the drive is properly
terminated.
2. If the PowerVault 110T DLT VS160 Tape drive is not the last or
only device on the SCSI bus, check all SCSI cable connections
and make sure the last device on the SCSI bus is terminated.
3. Make sure termination is set properly on the SCSI host adapter.
4. If you attach the drive to a narrow (50-pin) SCSI bus, you must
use a customer-supplied 68-pin to 50-pin adapter that
terminates the unused 18 pins. These adapters are sometimes
labeled "high-byte termination."
5. Regardless of which device is used to terminate the SCSI bus,
it must have power applied and be turned on for proper
termination to occur.
Make sure the terminators are placed only at each end of the SCSI
bus — normally one at the host adapter and one on the last device on
the bus. However, if both internal and external devices are attached to
the same SCSI host adapter, the adapter may be positioned in the
middle of the SCSI bus and should not be terminated. In that case,
the SCSI devices on each end of the bus must be terminated.
Move the SCSI host adapter to a different expansion slot.
Make sure the total length of the SCSI bus does not exceed the ANSI
SCSI standard of 19 feet (6 meters) for a Single-Ended (SE) bus, 40
feet (12 meters) for a Low-Voltage Differential (LVD) SCSI bus with
multiple devices, or 82 feet (25 meters) for an LVD SCSI bus with a
single device. If you attach the drive to an SE bus or if there are any
SE devices attached to the bus, the bus is limited to the maximum
cable lengths of an SE bus.
1. If the PowerVault 110T DLT VS160 Tape drive is the last or
only device on the SCSI bus, make sure the drive is properly
terminated. Make sure only the last device is terminated.
2. If the PowerVault 110T DLT VS160 Tape drive is not the last or
only device on the SCSI bus, check all SCSI cable connections
and make sure the last device on the SCSI bus is terminated.
3. Make sure termination is set properly on the SCSI host adapter.
4. If you attach the drive to a narrow (50-pin) SCSI bus, you must
use a customer-supplied 68-pin to 50-pin adapter that
terminates the unused 18 pins. These adapters are sometimes
labeled "high-byte termination."
5. Regardless of which device is used to terminate the SCSI bus,
it must have power applied and be turned on for proper
termination to occur.
1. Plug the PowerVault 110T DLT VS160 Tape External drive's
power cable into a power outlet on the same circuit as the host
server.
2. Plug the PowerVault 110T DLT VS160 Tape External drive's
power cable into a different power outlet.
If the operating system recognizes the drive, but not the backup
application, confirm that you are using a compatible backup