Dell PowerVault TL2000 User Manual download pdf (Page 7)

Chapter 1. Introduction

This document describes the SCSI Media Changer Command Set for the Dell

™

PowerVault

™

TL2000 Tape

Library and TL4000 Tape Library. The host will recognize both a tape drive and a Media Changer on the

same SCSI ID. On this SCSI ID logical unit zero is reserved for the tape drive and logical unit one is used

for the media changer. The tape drive will pass the received SCSI commands for LUN 1 over to the

attached library controller by means of serial communication.

The SCSI media changer commands are based on the following specifications.

Document T10 Version ANSI INCITS Version

SMC-2 T10/1383-D rev 7 ANSI INCITS 382-2004

SPC-3 T10/1416-D rev 23

SAM-2 T10/1157-D rev 24 ANSI INCITS 366-2003

A media changer logical unit receives commands to move cartridges between various types in the element

address space. The element types are storage, import-export, data transfer, and medium transport. The

cartridge handling robotic subsystem, addressed as a medium transport element, moves cartridges within

a media changer. The media changer logical unit maintains an inventory of cartridges and the element

addresses. The media changer logical unit reports this inventory when requested as well as identifying the

element address assigned to different types of elements.

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Dell PowerVault TL2000 User Manual Page 7