Quantum DAT 160 User Guide

Chapter 3  Installing External Tape Drives

Connecting the SCSI Tape Drive

Quantum DAT 160 User’s Guide

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The SCSI bus type determines the speed at which data can be transferred 

between devices on the bus and the maximum length of cable that can be 

used. The drives support a burst transfer rate of 160 MB/sec. To benefit 

from this level of performance, it is important to ensure that the drives 

are connected to a SCSI bus of a similar or higher specification. This 

means that you need:

• An Ultra160 or Ultra320 SCSI bus. If you attach the drive to a lower 

specification SCSI bus, it will still work but data will not be 

transferred as quickly. 

• LVD-rated SCSI cabling and terminators. The LVD interface enables 

the data to be transferred at the drive's maximum rate.

Table 4   Supported SCSI Bus 
Types

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Your external tape drive comes with various default settings. You may 

need to change these settings to suit your requirements. Review the 

default settings in 

 to determine whether they suit your 

requirements or need to be changed.

The drives are not compatible with high voltage differential 

(HVD) SCSI devices.

Ultra160 LVD, Ultra320 

LVD

Yes. These are recommended 

configurations.

Ultra2 LVD, Ultra Wide 

LVD

Yes. These are supported, but 

performance may be impaired.

Ultra wide, single-ended

Yes. But this is not a recommended 

configuration as it will restrict 

performance.

Ultra narrow, single-ended Yes. But this is not recommended as it will 

severely restrict performance and you will 

need a suitable cable or adapter.

High Voltage Differential 

No. The drive will not work and you may 

damage the drive or controller