Adaptec AHA-2740W Manuale utente

AHA-2740W/2742W/2744W

Stock Number: 510647-00, Rev. A Page: Front Cover

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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User’s GuideUser’s Guide

AHA-2740W/2742W/2744W

EISA-to-Fast, Wide SCSI Host Adapters

AHA-2740W/2742W/2744W

Stock Number: 510647-00, Rev. A Page: Back Cover

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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Adaptec, Inc.

691 South Milpitas Boulevard

Milpitas, CA 95035

Adaptec logo are registered trademarks

of Adaptec, Inc.

Printed in Singapore

STOCK NO.: 510647-00, Rev. A LL 08/94

AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: i

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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▼ ▼ ▼ ▼ AHA-2740W/2742W/2744W

EISA-to-Fast, Wide SCSI Host Adapters

User’s Guide

AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: ii

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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may be reproduced, stored in a retrieval system, or transmitted in any form or by any

means, electronic, mechanical, photocopying, recording or otherwise, without the

prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035.

Trademarks

Adaptec, the Adaptec logo, AHA, and PhaseEngine are registered trademarks and

EZ-SCSI is a trademark of Adaptec, Inc.

Bernoulli is a registered trademark of Iomega Corporation.

AT&T is a registered trademark of American Telephone and Telegraph Company

IBM, AT, and Micro Channel are registered trademarks of International Business

Machines Corporation.

MS-DOS is a registered trademark of Microsoft Corporation.

NetWare is a registered trademark of Novell, Inc.

SCO is a registered trademark of the Santa Cruz Operation, Inc.

UNIX is a registered trademark of Unix System Laboratories.

All other product names are trademarks or registered trademarks of their respective

owners.

Changes

The material in this document is for information only and is subject to change with-

out notice. While reasonable efforts have been made in the preparation of this docu-

ment to assure its accuracy, Adaptec, Inc. assumes no liability resulting from errors or

omissions in this document, or from the use of the information contained herein.

Adaptecreserves the right to make changes in the product design without reservation

and without notification to its users.

Adaptec Technical Support

Adaptec products have been specifically developed for easy installation and use. We

believe that our documents and the onscreen instructions and help are complete and

clear enough to meet your needs. If you need more assistance, please contact us.

●The Adaptec Electronic Bulletin Board Service (BBS) provides information on soft-

ware upgrades, new releases, technical advice, and other topics. The BBS is avail-

able 24 hours a day at 408-945-7727; 1200/2400/9600/14400 baud, 8 data bits,

1 stop bit, no parity.

●To contact the Adaptec Technical Support Hot Line, call 800-959-SCSI (7274) or

408-945-2550; M–F: 6:00 a.m. to 5:00 p.m., Pacific Time.

Interactive FAX Service

The Adaptec Interactive FAX Service provides the latest online information about

Adaptec products and services. The Adaptec Interactive FAX Service is available

23 hours a day, 7 days a week, at 408-957-7150.

iii

AHA-2740W/2742W/2744W User’s Guide

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Ordering Software and Cables

To order Adaptec software and SCSI cables, call 800-442-SCSI (7274), M–F: 6:00 a.m. to

5:00 p.m., Pacific Time. If you are calling from outside the U.S. and Canada, the num-

ber is 408-957-SCSI (7274).

Literature Hotline

To request additional documentation for Adaptec products, call 800-934-2766,

M–F: 5:00 a.m. to 6:00 p.m., Pacific Time.

FCC Compliance Statement

This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection

against harmful interference in residential installations. This equipment generates, uses, and can

radiate radio frequency energy, and if not installed and used in accordance with the instructions,

may cause harmful interference to radio communications. However, there is no guarantee that

interference will not occur in a particular installation.

If this equipment does cause interference to radio or television equipment reception, which can be

determined by turning the equipment off and on, the user is encouraged to try to correct the inter-

ference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Move the equipment away from the receiver

• Plug the equipment into an outlet on a circuit different from that to which the receiver is

powered

• If necessary, the user should consult the dealer or an experienced radio/television technician

for additional suggestions

CAUTION: Only equipment certified to comply with Class B (computer input/output devices,

terminals, printers, etc.) should be attached to this equipment, and must have shielded interface

cables.

Finally, any changes or modifications to the equipment by the user not expressly approved by the

grantee or manufacturer could void the user’s authority to operate such equipment.

Each host adapter is equipped with an FCC compliance label which shows only the FCC identifi-

cation number. The full text of the associated label follows:

This device complies with part 15 of the FCC rules. Operation is subject to the following

two conditions: (1) this device may not cause harmful interference and (2) this device

must accept any interference received, including interference that may cause undesired

operation.

AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: iv

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: v

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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Table of Contents

Preface

Inside This Document xi

Conventions xii

Advisories xiii

1 Introduction

About This Chapter 1-1

Overview 1-3

The AHA-2740W/2742W/2744W Host Adapters 1-3

Features 1-4

Fast Data Transfer Rates 1-4

Maximum Off-loading the Host CPU 1-4

Fully Disk Array Capable 1-4

Advanced Fast SCSI-2/SCSI-3 Implementation 1-4

Multiple Device and Applications Support 1-5

Configuration Flexibility 1-5

Board Layout 1-6

Default Settings 1-8

The Onboard Floppy Controller (AHA-2742W and

AHA-2744W Only) 1-8

Unpacking and Inspection 1-9

2 Getting Started

About This Chapter 2-1

Installation Overview 2-3

The Host Adapter and the SCSI Bus 2-4

Quick Installation 2-5

Prepare Your SCSI Devices 2-5

Install Your Host Adapter and Peripherals 2-6

Configure the Host Adapter 2-7

Installation 2-8

Termination on the SCSI Bus 2-9

AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: vi

Print Spec Number: 492897-00

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68-pin Internal Connector Only 2-12

68-pin External Connector Only 2-12

68-pin Internal and 68-pin External

Connectors 2-13

50-pin Internal Connector Only 2-13

50-pin and 68-pin Internal Connectors 2-14

50-pin Internal and 68-pin External

Connectors 2-14

50-pin and 68-pin Internal Connectors, and

68-pin External Connector 2-15

SCSI ID Setting 2-15

Installing the Host Adapter 2-16

Cabling the Host Adapter 2-17

Connecting Standard 8-bit Internal SCSI

Devices 2-17

Connecting 16-bit Internal Wide SCSI

Devices 2-20

Connecting 16-bit External Wide SCSI

Devices 2-22

Connecting Floppy Drives (AHA-2742W and

AHA-2744W Only) 2-25

SCSI Bus Activity LED Connector 2-27

Before Rebooting Your System 2-28

Reassemble the System 2-28

3 Configuring the Host Adapter

About This Chapter 3-1

The EISA Configuration Utility 3-3

Run the EISA Configuration Utility 3-3

Copy Configuration and Overlay Files 3-4

Select the Host Adapter 3-4

Configure the Host Adapter Parameters 3-5

Interrupt Level 3-5

Bus Release Time 3-6

Data FIFO Threshold 3-6

Host Adapter BIOS Base Address 3-7

Wide SCSI Channel Interface Definitions 3-8

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Table of Contents

AHA-2740W/2742W/2744W User’s Guide

Stock Number: 510647-00, Rev. A Page: vii

Print Spec Number: 492897-00

Current Date: 8/3/94 ECN Date: 8/9/94

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Host Adapter SCSI ID 3-8

SCSI Bus Parity Check 3-9

SCSI Selection Timeout 3-10

SCSI Bus Reset at Power-on 3-10

SCSI Bus Termination (AHA-2740W and

AHA-2742W Only) 3-11

BIOS and Device Configuration 3-11

BIOS Configuration 3-12

Device Configuration 3-13

Exit SCSI Device Configuration 3-18

Exit the EISA Configuration Utility 3-18

Utilities 3-18

Disk Format Utility 3-19

Disk Format 3-19

Disk Verify 3-19

4 Troubleshooting

About This Chapter 4-1

SCSI Troubleshooting Checklist 4-3

Problems and Solutions 4-4

Conflicts With Other Options 4-6

A Specifications

About This Appendix A-1

Technical Information A-3

Product Specifications A-3

Physical Dimensions A-3

Power Requirements A-3

Environmental Requirements A-3

Extended Industry-Standard Architecture

Interface A-4

SCSI Interface A-4

Electrical Interface A-4

Single-ended Output Signals A-4

Single-ended Input Signals A-5

Differential Output Signals A-5

Differential Input Signals A-5

viii

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Print Spec Number: 492897-00

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50-pin SCSI Connector A-6

68-pin SCSI Connectors A-6

Floppy Disk Interface A-11

Standard Electronic and Physical Interface A-11

Connector A-11

B I/O Operating Environment

About This Appendix B-1

Host Adapter Support B-3

DOS/Windows B-3

Adaptec EZ-SCSI B-4

C Optimizing Performance

About This Appendix C-1

Performance Tips C-3

Enabling Synchronous Negotiation C-3

Enabling Wide Negotiation C-3

Disabling the Host Adapter BIOS C-4

Enabling SCSI Bus Parity C-4

Setting Enable Disconnection C-4

Send Start Unit Command C-4

DOS/Windows Performance C-5

D Disk Drives Over 1 GByte

About This Appendix D-1

Extended Translation (Using DOS 5.0) D-3

The DOS 1 GByte Limit D-3

When to Use Extended Translation D-3

With DOS V 5.0 Only D-3

Drives With Mixed Partitions D-4

Using Fdisk D-4

Questions and Answers About Extended

Translation D-4

Glossary

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