Interface implementation, The scsi interface, Interface implementation 13 – HP C737990900 User Manual

Page 13: The scsi interface 13

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Interface Implementation 13

Interface Implementation

HP Ultrium drives use SCSI-3 as the interface to connect to the host system.
This chapter gives an overview of how the interface operates.

Full details of the messages are given in

Chapter 2

and of commands in

Chapter 3

and

Chapter 4

.

The SCSI Interface

The Small Computer System Interface (SCSI) is an industry standard, approved

by the American National Standards Institute (ANSI). You are recommended

to read the ANSI standard document in conjunction with this manual. The

ANSI specification defines the interface in general while this document

describes the HP Ultrium implementation.
The SCSI implementation provides a drive with a standard set of features and

functions. These include the following:

■

Synchronous data transfers

■

Asynchronous data transfers

■

Implementation of all mandatory and most optional commands of the

Sequential Access command set

■

LVD (Low-Voltage differential) SCSI connection

■

Ultra3 wide SCSI

■

Conformance to the following SCSI standards:

—

SAM-2 T10/1157-D rev.23

—

SPI-3 ANSI NCITS.336:2000

—

SPC-2 ANSI NCITS.351:2001

—

SSC ANSI NCITS.335:2000

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