Quantum DLT VS160 Betriebsanweisung

Diagnostics and Troubleshooting
Troubleshooting

44

ValueLoader DLT VS80/DLT VS160 Tape Autoloader User Manual

Troubleshooting

4

4

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 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 (not recommended), only SCSI IDs 0 through 7 are available 

•

Verify that all SCSI cables are securely connected 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 ft 

(6 m) for a SCSI-1 SE bus, 10 ft (3 m) for a Fast SCSI (Narrow or Wide) 

or an Ultra SCSI (Narrow or Wide) SE bus, 40 ft (12 m) for an LVD 

bus with multiple devices, or 82 ft (25 m) for an LVD bus with a 

single device. The length of the internal SCSI cabling inside the 

ValueLoader is 1 ft (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 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 should be 

terminated. Refer to the manuals supplied with the other devices on 

the SCSI bus for termination on enabling or disabling termination on 

those devices.