Quantum DAT 160 Betriebsanweisung

9

SCSI is the acronym for Small Computer System Interface. The interface is a
combination of an 8-bit parallel bus (hardware) and a command set (software). SCSI
allows you to connect up to seven SCSI devices to any host computer.

The SCSI interface is transparent to the host computer. The computer only needs to
ask for data from a device, or ask to send data to a device. The SCSI interface
performs the task of moving the data.

The SCSI standard specifies that up to seven devices may be connected to a single
SCSI channel. It does this by specifying seven IDs (addresses), one for each device.
The DAT Autochanger, when operated in random access mode, requires two IDs;
one for the DAT drive, and one for the robotics. The SCSI ID for the drive has been
preset at the factory to "0" and the ID for the robotics has been preset to "3". Your
backup software that controls the DAT Autochanger determines the proper IDs for
the drive and robotics. Refer to the User's Manual provided with your software for
the correct IDs.

The SCSI ID switches are located on the rear of the DAT Autochanger. They are the
small red rotary switches to the left of the SCSI connectors. You may change the IDs
by

 using a small flat-blade screwdriver to move the switch to the proper position.

When operated in sequential access mode the robotics section of the DAT
Autochanger does not appear on the bus, and therefore does not require a SCSI ID.

p Turn off the power switch. Unplug the cord from the AC outlet.