ADIC DAT 160 Installation And Operating Manual

Contents

ADIC DAT 160 Installation And Operating Manual Manual pdf 21 page image

Getting Started 9SCSISCSI is the acronym for Small Computer System Interface. The interface is acombination of an 8-bit parallel bus (hardware) and a command set (software). SCSIallows 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 toask for data from a device, or ask to send data to a device. The SCSI interfaceperforms the task of moving the data.SCSI IDThe SCSI standard specifies that up to seven devices may be connected to a singleSCSI 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 beenpreset at the factory to "0" and the ID for the robotics has been preset to "3". Yourbackup software that controls the DAT Autochanger determines the proper IDs forthe drive and robotics. Refer to the User's Manual provided with your software forthe correct IDs.The SCSI ID switches are located on the rear of the DAT Autochanger. They are thesmall red rotary switches to the left of the SCSI connectors. You may change the IDsby 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 DATAutochanger does not appear on the bus, and therefore does not require a SCSI ID.Preparing the Host Computer SystemPower Off the Host Computerp Turn off the power switch. Unplug the cord from the AC outlet.