Exabyte VXA-2, Product Manual, Page: 60 / 90

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RODUCT
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ANUAL
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Chapter 7 O
VERVIEW OF THE
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OMMUNICATION
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NTERFACE
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XTERNAL
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RIVE
This section describes the cable, connector, and terminator requirements for
the external LVD SCSI tape drive.
SCSI Cable Requirements
For the external tape drive, select a cable that complies with the SCSI-3
specification and meets the requirements listed in Table 7-5 .
SCSI Terminator Requirements
If the external tape drive is the last device on the SCSI bus, you must terminate
the bus by installing an AMP 796051-1 (SE/LVD Multi-mode), or an equivalent
LVD terminator, on one of the tape drive’s SCSI connectors.
Table 7-5 SCSI cable requirements
Specification Requirement
Connector type 68-pin male, high-density, shielded, AMP 750752-1 or
equivalent
Maximum length
a
12 meters (39 feet)
b
a
The maximum length of 12 meters only applies to an LVD SCSI bus. If a single-ended device is connected
anywhere on the bus, all devices on the bus operate in single-ended mode. When operating in
single-ended mode, the maximum allowable bus length is 3 meters (9.8 feet), terminator to terminator.
Exceeding the maximum cable length will result in unstable and unpredictable operation.
b
If only two devices are attached to an LVD bus in a point-to-point configuration, the maximum allowable
cable length is 25 meters (82 feet).