10
1 Introduction
About This Guide
This guide describes the implementation of the SCSI bus communication for the
Spectra 2K library. This robotic tape library can store up to 30 tapes within the library,
and it uses a robotic tape picker to move tapes from storage to a tape drive. Sensors
track the location of data cartridges within the library, and a bar code reader, if
installed, reads and stores bar code label information on the cartridges. Through a SCSI
interface, the Spectra 2K library supplies information about its cartridge inventory and
accepts instructions on what to do with the cartridges.
Intended Audience
This guide is designed for software or hardware developers who implement SCSI
communication with the Spectra 2K tape library. The guide assumes knowledge of, or
access to, SCSI-2 standards and SCSI terminology.
Scope
The SCSI interface of the Spectra 2K library was designed according to the SCSI-2
standard as defined by ANSI in publication ANSI X3.131-1994, Small Computer System
Interface-2 (SCSI-2). Within the standard, there are many areas in which devices
provide information specific to their particular design, how they carry out commands,
or respond to other messages. The subject of this guide is the Spectra 2K library’s
implementation of the SCSI-2 communication standard.
Note:
This guide does not cover the SCSI communication implementation
of the tape drives installed in the library. This information is
available from the drive manufacturer. The tape drives act as
completely separate SCSI devices.
