Adaptec 2920C - AHA Installation Manual

Adaptec 2920C - AHA Installation Manual

Pci-to-fast scsi host adapter with scsiselect

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Introduction
®
The AHA
-2920C host adapter provides a powerful multitasking
interface between your computer's PCI bus and SCSI devices (disk
drives, CD-ROM drives, scanners, tape drives, removable-media
drives, etc.). You can connect up to seven 8-bit SCSI devices to your
host adapter. The following figure shows the major components of the
AHA-2920C host adapter
The AHA-2920C host adapter provides a powerful multitasking
interface between your computer's PCI bus and internal and external
SCSI devices (disk drives, CD-ROM drives, tape drives, removable-
media drives, etc.). The host adapter supports SCSI Configured
AutoMatically (SCAM), which automatically assigns SCSI IDs to
SCAM compatible devices. The figure below identifies the major com-
ponents of the AHA-2920C host adapter.
50-pin Internal SCSI Connector
SCSI Terminator Chips
J3
50-pin High-Density External
SCSI-2 Connector
With the Adaptec software drivers, you can use AHA-2920C host
adapters in computers running DOS/Windows
®
Windows
95, Windows NT™, UNIX, and NetWare.
Installing Software . . . . . . . . . . . . 5
Configuring Disk Drives . . . . . . . 6
External LED
Connector
EEPROM
Using SCSISelect . . . . . . . . . . . . . . 6
BIOS
40 Mhz Clock
Crystal
Solutions . . . . . . . . . . . . . . . . . . 11
SCSI Chip
®
, OS/2,
Contents
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Summary of Contents for Adaptec 2920C - AHA

  • Page 1: Table Of Contents

    SCAM compatible devices. The figure below identifies the major com- ponents of the AHA-2920C host adapter. 50-pin Internal SCSI Connector SCSI Terminator Chips 50-pin High-Density External SCSI-2 Connector With the Adaptec software drivers, you can use AHA-2920C host ® adapters in computers running DOS/Windows , OS/2, ® Windows 95, Windows NT™, UNIX, and NetWare.
  • Page 2: Installation

    Installation Installing the Host Adapter WARNING: Before beginning the installation, turn power to the computer and external devices and disconnect the power cords. Step 1: Remove the cover from the computer case. (If necessary, refer to your computer documentation.) Back of Your Computer Step 2: Locate an unused PCI expansion slot.
  • Page 3: Installing Internal Scsi Devices

    (Refer to your computer and device documentation for instructions.) If you purchased your AHA-2920C as part of an Adaptec kit, the kit includes one 50-pin internal SCSI cable that allows you to connect up to two internal SCSI devices.
  • Page 4: Installing External Scsi Devices

    Step 6: Connect a DC power cable from your computer’s power supply to the power connector on the SCSI device. DC power cable (from the power supply) 50-pin SCSI ribbon cable Step 7: Replace the computer chassis cover. Installing External SCSI Devices Step 1: Plug one end of a 50-pin high-density external SCSI cable into the host adapter’s external SCSI...
  • Page 5: Installing Software

    SCSI devices such as tape drives, CD-ROM drives, and scanners. ® If Adaptec EZ-SCSI was included with your AHA-2920C, you should install it now. Adaptec EZ-SCSI provides software driver support for your host adapter and SCSI devices in computers running ® ®...
  • Page 6: Configuring Disk Drives

    Configuring Disk Drives Every hard disk must be low-level formatted, parti- tioned, and logically formatted before you can use it to store data. Most SCSI hard disks are physically for- matted at the factory and do not need to be formatted again.
  • Page 7 Most SCSI disk devices are preformatted at the factory and do not need to be formatted again. The Adaptec Format Disk utility is compatible with the vast majority of SCSI disk drives. Caution: A low-level format destroys all data on the drive.
  • Page 8 Additional Options: SCSI Device Configuration SCSI device settings allow you to configure parameters for each device on the SCSI bus. To configure a specific device, you must identify the SCSI ID assigned to that device. To determine the SCSI ID of a device, see Using the SCSI Disk Utilities on page 6.
  • Page 9 Support Removable Disks Under BIOS as Fixed Disks — This option controls which removable- media drives are supported by the host adapter BIOS. The default setting is Boot Only. The following choices are available: – Boot Only — Only the removable-media drive designated as the boot device is treated as a hard disk drive.
  • Page 10: Troubleshooting Checklist

    Troubleshooting Checklist If you have any problems during the installation, check the following items first: Have you installed the host adapter in a PCI Rev 2.0 compliant computer? Are all SCSI devices powered? Are all SCSI bus cables and power cables properly connected? Is pin 1 oriented correctly? Does the host adapter and each device on the SCSI bus have a unique SCSI ID?
  • Page 11: Common Problems And Solutions

    Common Problems and Solutions Boot From SCSI Disk Fails—If you are booting from a SCSI hard disk drive, make sure the Drives setting in your computer’s Setup program that corresponds to the drive is set to None or No Drives Installed, as required for SCSI hard disk drives.
  • Page 14 (1) this device may not cause harmful inter- ference and (2) this device must accept any interference received, includ- ing interference that may cause undesired operation. Adaptec, Inc. AHA-2920C Tested To Comply With FCC Standards FOR HOME OR OFFICE USE...
  • Page 16 691 South Milpitas Blvd. Milpitas, CA 95035 © 1997, Adaptec, Inc. All rights reserved. No part of this publi- cation may be reproduced, stored in a retrieval system, or trans- mitted 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...

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