Sony storstation lib-d81 User Manual

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Appendix

For impedance and primary conductor, use a Ultra Wide LVD SCSI cable that 
conforms to SCSI-3 specifications. However, when using a model equipped 
with an AIT-3 drive, use an Ultra 160/m SCSI LVD cable.

The total allowable length of SCSI cables used in one LVD SCSI bus is as 
follows. (This length includes the length of all internal and external cables.)

• The length of the AIT autoloader internal cable is 0.5 m (19.7 in.).
• If there are more than three devices on an LVD SCSI bus, the total allowable 

length is 12 m (39.4 ft.).

This section describes common specifications of SCSI components and SCSI 
buses.

The SCSI system is composed of the following components.

• Initiator

This is a host computer system that functions as an initiator program of 
commands. The system consists of the application software, the operating 
system, the device driver and the SCSI adapter card.

• Bus

By connecting the SCSI cables to the SCSI adapter card, the autoloader and 
other devices, a path (or a bus) is created for transferring commands.

• Targets

The AIT autoloader and the AIT drive are peripheral devices (or targets) that 
receive commands from the host computer. Up to 16 devices (including the 
host computer) can be connected to the Wide SCSI bus. Also, up to 8 devices 
can be connected to the Narrow SCSI bus.

When you are setting up the AIT autoloader using a SCSI bus, please note the 
following precautions 

The AIT autoloader is an LVD SCSI device. All SCSI devices connected to the 
AIT autoloader on the SCSI bus must be LVD SCSI devices.