Adaptec AHA-2944UW Installation guide

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Adaptec AHA-2944UW Installation guide | Manualzz

Installation

Guide

AHA-2944UW

Adaptec, Inc.

691 South Milpitas Blvd.

Milpitas, CA 95035

Copyright © 1996, Adaptec, Inc. All rights reserved. No part of this publication 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.

Adaptec, the Adaptec logo, AHA, EZ-SCSI, and SCSISelect are trademarks of Adaptec, Inc. which may be registered in some jurisdictions. Windows and Windows 95 are registered trademarks, and Windows NT is a trademark, of Microsoft Corporation in the U.S. and other countries used under license. All other trademarks used are owned by their respective owners.

The material in this document is for information only and is subject to change without notice. While reasonable efforts have been made in the preparation of this document 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.

Adaptec reserves the right to make changes in the product design without reservation and without notification to its users.

Printed in Singapore

Stock No.: 511248-00, Rev. A MR 11/96

Information subject to change without notice.

PCI-to-Ultra Wide Differential SCSI Host

Adapter with SCSISelect

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Introduction

The Adaptec AHA

®

-2944UW PCI-to-Ultra Wide Differential SCSI

Host Adapter provides a powerful multitasking interface between your computer’s PCI bus and differential SCSI devices (disk drives,

CD-ROM drives, scanners, tape backups, removable media drives, etc.). The following figure shows the major components on the

AHA-2944UW.

Jumpers

J2 and J4

68-pin 16-bit

Internal SCSI

Connector

50-pin 8-bit Internal SCSI Connector

LED Connector

Host

Adapter

LED

68-pin 16-bit

External

SCSI

Connector

AIC-78xx SCSI Protocol Chip

Contents

Installing the Host Adapter and SCSI Devices .............. 2

Installing the AHA-2944UW . . . . . . 2

Assigning SCSI ID Numbers . . . . . . 2

Setting SCSI Termination . . . . . . . . . 2

Installing Differential SCSI Devices 3

Using the LED Connector . . . . . . . . 4

Reassembling the Computer . . . . . . 4

Configuring the Computer .. 4

PCI Configuration . . . . . . . . . . . . . . 4

Using SCSISelect . . . . . . . . . . . . . . . 5

Advanced Setups and

Configurations . . . . . . . . . . . . . . . . 8

Installing Device Drivers ..... 9

Need Assistance? .................. 9

Troubleshooting Tips . . . . . . . . . . . . 9

Contacting Adaptec . . . . . . . . . . . . 11

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1

2

Installing the Host

Adapter and SCSI

Devices

Installing the AHA-2944UW

Follow these instructions to install the AHA-2944UW:

1 Turn OFF power to the computer and peripheral devices, and disconnect the power cords.

2 Remove the cover from the computer case.

3 Locate an unused 32-bit PCI expansion slot that supports bus master data transfers, then unscrew and remove the metal bracket that covers the card-slot opening. (Save the screw to use when securing the host adapter in your computer.)

PCI slots are shorter than ISA or EISA slots and are typically white. Usually there are three PCI slots.

(One of these may be a shared slot into which you can insert either an ISA/EISA board or a PCI board.)

4 Insert the AHA-2944UW in the PCI slot. Press it down firmly so that the contacts are securely seated in the slot.

5 When the AHA-2944UW is firmly seated in the slot, secure the metal bracket of the host adapter with the screw you removed in step 3.

Do not replace the computer cover or reconnect your computer and peripherals to their power sources yet!

Assigning SCSI ID Numbers

The AHA-2944UW and each device connected to it must have a unique SCSI ID number ranging from 0 to 15.

We recommend that you leave the AHA-2944UW host adapter set to its default setting of SCSI ID 7. If you need to change the AHA-2944UW SCSI ID, see Running

SCSISelect on page 8. If you need to change the SCSI ID on a hard disk drive or another SCSI device, refer to the device’s documentation.

Note: If you plan to boot your computer from a

SCSI device attached to the AHA-2944UW host adapter, and the device is not assigned the lowest installed SCSI ID, set the Boot Target ID setting in the SCSISelect utility to correspond to the

SCSI ID of the device you are booting from (see

Using SCSISelect on page 5).

Setting SCSI Termination

SCSI termination is controlled by a set of electrical resistors called terminators. Terminators must be installed (or enabled) at the two extreme ends of the SCSI bus. All devices between the ends must have their terminators removed (or disabled).

Terminating the AHA-2944UW

Termination on the AHA-2944UW itself is controlled by software commands via the SCSISelect utility. The default setting is Automatic, which works like this:

If the AHA-2944UW detects that a cable is attached to one SCSI connector, it enables its terminators (the

AHA-2944UW is at the end of the SCSI bus).

If the AHA-2944UW detects that cables are attached to two connectors (either the two internal connectors or one internal and one external connector) it disables its terminators (the AHA-2944UW is in the middle of the SCSI bus).

We recommend that you leave the AHA-2944UW set to its default setting of Automatic. If you need to manually set AHA-2944UW termination run the SCSISelect Utility, as described on page 8, and select a setting as indicated in this table.

Devices Connected to AHA-2944UW

68-pin internal connector only

68-pin external connector only

68-pin internal and 68-pin external connectors

50-pin internal connector only

50-pin and 68-pin internal connectors

50-pin internal and 68-pin external connectors

OFF

ON

OFF

OFF

AHA-2944UW

Termination

Low

ON

ON

High

ON

ON

OFF

ON

ON

ON

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Note: You cannot attach cables and SCSI devices to all three AHA-2944UW connectors.

Terminating SCSI Devices

Read the device’s documentation to determine how to enable or disable termination on your SCSI device(s). On most internal SCSI devices the termination setting is controlled by a jumper or a switch. On other internal SCSI devices you must physically remove or install resistor modules. On most external SCSI devices, a terminating plug (a resistor pack embedded in a small plug) is installed or removed to control termination.

Termination in Multiple Computer

Configurations

If you are setting up your SCSI bus so that SCSI devices are shared by host adapters in two different computers, you can enable your host adapter to provide termination power and enable termination even when one computer is powered OFF . To do this, place a jumper shunt on jumper J4 to enable termination and control on data 0-7; place a jumper shunt on jumper J2 to enable termination on upper data 8-15 for the powered down computer.

Note: This manual feature will override the

SCSISelect setting for termination control.

Installing Differential SCSI Devices

Caution: The AHA-2944UW host adapter supports only differential SCSI devices. Do not connect single-ended SCSI devices, because they may damage the host adapter. Read the SCSI device documentation if you are not sure whether the device is single-ended or differential.

You can connect up to fifteen 16-bit Differential Ultra

Wide SCSI devices (internal or external) to the

AHA-2944UW. If you want to combine wide and nonwide SCSI devices, you can connect up to seven 8-bit internal devices and up to eight 16-bit Wide SCSI devices

(internal or external) to a single AHA-2944UW.

Choosing SCSI Cables

The cables required to connect SCSI devices are determined by the type of devices you are installing, as described in the following table:

SCSI Device Type

8-bit Internal SCSI

16-bit Internal Wide SCSI

16-bit External Wide SCSI

SCSI Cable type

50-pin internal

68-pin internal

68-pin external

Adaptec sells high-quality internal and external SCSI cables. If your reseller does not stock these cables, you can order them directly from Adaptec. (The phone number is listed on page 11.)

Note: To guarantee reliable operation of your

SCSI devices and host adapter, be sure the maximum combined lengths for internal and external SCSI cables does not exceed 25 meters

(82 feet).

Connecting Internal SCSI Devices

If you are connecting internal SCSI devices, make sure you have an internal SCSI cable with enough connectors to accommodate all of your devices.

1 Prepare each SCSI device for installation; configure the device SCSI ID and terminators (terminate the last internal device attached to the cable). For instructions, see the device’s documentation as well as

Installing the Host Adapter and SCSI Devices on page 2

2 Install the SCSI device in your computer. Refer to your computer and device documentation for instructions.

3 Plug the connector at one end of the internal SCSI cable into one of the host adapter’s internal SCSI connectors.

Make sure the colored stripe on one side of the cable is aligned with pin-1 of the host adapter’s connector.

Pin-1 of the connector is usually designated by a small triangle (

▲ ), or a “1” on the connector.

4 Plug the remaining cable connectors into the connectors on the backs of other SCSI devices (if any).

Make sure the colored stripe on the cable is aligned with pin-1 of the device’s connector.

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4

5 Connect a DC power cable (from your computer’s power supply) to the power connector on the SCSI device.

Connecting External SCSI Devices

If you are connecting external SCSI devices to your host adapter, you must obtain an external SCSI cable for each external device you install.

1 Prepare each SCSI device for installation; configure the SCSI ID and attach a terminating plug into the last external device. For instructions, see the device’s documentation as well as Installing the Host Adapter

and SCSI Devices on page 2.

2 Plug the connector at one end of the external SCSI cable into the host adapter’s external SCSI connector.

3 Plug the connector at the other end of the cable into one of the SCSI connectors on the external SCSI device.

4 To connect other external SCSI devices, daisy-chain each device to the previous device until all external

SCSI devices have been connected.

Using the LED Connector

(Optional) Most computers have an LED disk activity light on the front panel. If you disconnect the cable from the LED connector on the motherboard and connect it to the LED connector on the host adapter, the LED on the front panel of the computer will light whenever there is activity on the SCSI bus.

Reassembling the Computer

Be sure all power switches are OFF , then replace the computer chassis cover and reconnect the power cables to your computer and SCSI devices.

Configuring the

Computer

PCI Configuration

If your computer does not recognize the host adapter after you install it (e.g, you receive an error message, or you cannot access any of the attached SCSI devices), run the computer’s setup program and check the PCI configuration parameters. Usually you start the setup program by pressing a specified key combination when your computer boots (refer to your computer’s documentation.)

Here are some things you may need to do in the setup program.

Note: Some configuration options apply to a specific PCI bus slot; therefore, if you change these options be sure you are applying them to the slot in which the host adapter is installed.

Read your computer documentation if you are not sure which slot corresponds to each number.

If there is an Interrupt Type or Interrupt Line option in the setup program, be sure to select Int-A or

Interrupt Type = A . Depending on your system design, you may also need to change a motherboard jumper setting.

If there is a Triggering Interrupt option, be sure to select Level.

If there is an option to enable or disable bus mastering for the PCI slots, be sure to select Enabled.

If there is an option to enable or disable individual

PCI slots, be sure the slot in which you install the host adapter is enabled.

If your computer has a combination of ISA (or EISA) boards and PCI boards, you may need to mark the

IRQs used by ISA/EISA boards as Used so the system

BIOS will not try to assign these IRQs to other PCI boards.

In some systems the BIOS reserves a set of available

IRQs for PCI boards, and you have to assign these

IRQs manually.

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Using SCSISelect

The AHA-2944UW includes the onboard, menu-driven

SCSISelect configuration utility, which allows you to change host adapter settings without opening the computer or handling the board. SCSISelect also contains

SCSI disk utilities that let you low-level format or verify the disk media of your SCSI hard disk drives.

SCSISelect Default Settings

The default AHA-2944UW settings shown in the following table are appropriate for most SCSI devices. Run

SCSISelect only if you need to change a default setting, format a disk, or verify a disk. (See the instructions on page 8.) Otherwise, continue with Installing Device Driv-

ers on page 9.

Basic Host Adapter

Host Adapter SCSI ID

SCSI Parity Checking

Default

7

Enabled

Host Adapter SCSI Termination Automatic

Boot Device Configuration Default

Boot Target ID

Boot LUN Number

1

SCSI Device Configuration (0-15)

Initiate Sync Negotiation

Maximum Sync Transfer Rate

3

Enable Disconnection

0

0

Default

Yes (Enabled)

Yes (Enabled)

Initiate Wide Negotiation

Send Start Unit SCSI Command

2

Include in BIOS Scan 2

Advanced Host Adapter Configuration

Reset SCSI Bus at IC Initialization

Host Adapter BIOS

Support Removable Disks Under BIOS as Fixed Disks

2

Extended BIOS Translation for DOS Drives > 1 GByte

2

Display <Ctrl-A> Message During BIOS Initialization 2

Multiple LUN Support

2

BIOS Support for Bootable CD-ROM

2

BIOS Support for Int 13 Extensions

2

Support for UltraSCSI Speed

3

Yes(Enabled)

No(Disabled)

Yes (Enabled)

Default

Enabled

Enabled

Boot only

Enabled

Enabled

Disabled

Enabled

Enabled

Disabled

1

Setting is valid only if Multiple LUN Support is enabled

2

Settings are valid only if host adapter BIOS is enabled.

3 If support for UltraSCSI is enabled, the maximum transfer rate is 40 MBytes/Sec.

Basic Host Adapter Settings

The basic host adapter settings are the SCSISelect settings most likely to require any modification.

Host Adapter SCSI ID — This option sets the host adapter’s SCSI ID. The default setting is SCSI ID 7, which give the host adapter the highest priority on the SCSI bus (see Assigning SCSI ID Numbers on page

2). We recommend that you leave the host adapter set to SCSI ID 7.

SCSI Parity Checking —This option determines whether the host adapter verifies the accuracy of data transfer on the SCSI bus. The default setting is

Enabled. You should disable SCSI Parity Checking if any SCSI device connected to the AHA-2944UW does not support SCSI parity; otherwise, leave it enabled.

Most SCSI devices do support SCSI parity. If you are not sure whether a device supports SCSI parity, consult the documentation for the device.

■ Host Adapter SCSI Termination —This option sets termination on the host adapter. The default setting for the AHA-2944UW is Automatic. We recommend that you leave the AHA-2944UW set to its default setting of Automatic. If you want to manually set the termination setting, see Setting SCSI Termination on page 2 for appropriate settings.

Boot Device Settings

The boot device settings allow you to specify the device you wish to boot your computer from.

■ Boot Target ID —This option specifies the SCSI ID of the device you wish to boot from. The default setting is SCSI ID 0. The SCSI ID selected here must correspond to the ID configured on the boot device (see

Assigning SCSI ID Numbers on page 2).

■ Boot LUN Number —If your boot device has multiple

LUNs (Logical Unit Numbers) and Multiple LUN

Support is enabled (see If the Send Start Unit Command is set to yes for many devices, the boot time will vary

depending how long it takes each drive to start. on page

6), this option allows you to specify which LUN to boot from on your boot device. The default settings is

LUN 0.

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5

SCSI Device Settings

The SCSI device settings allow you to configure certain parameters for each device on the SCSI bus. To configure a specific device, you must know the SCSI ID assigned to that device. If you are not sure of the SCSI ID, see Using

the SCSI Disk Utilities on page 8.

■ Initiate Sync Negotiation —This option determines whether the host adapter initiates synchronous data transfer negotiation (Sync Negotiation) with connected devices. The default setting is Yes.

Synchronous negotiation is a SCSI feature that allows the host adapter and its connected SCSI devices to transfer data in synchronous mode. Synchronous data transfer is faster than asynchronous data transfer.

The host adapter always responds to Sync Negotiation if a SCSI device initiates it. If neither the host adapter nor the SCSI device initiate Sync Negotiation, data is transferred asynchronously.

Normally, you should leave the Initiate Sync Negotiation setting enabled, because most SCSI devices support synchronous negotiation and because it allows for faster data transfer.

Note: Some older SCSI-1 devices do not support

Sync Negotiation. This may cause your computer to operate erratically or hang if Initiate

Sync Negotiation is set to yes. Set Initiate Sync

Negotiation to No for these devices.

Maximum Sync Transfer Rate —This option sets the maximum synchronous data transfer rate that the host adapter supports. The default setting is

20.0 MBytes/sec.

The host adapter supports rates up to the UltraSCSI maximum of 20.0 MBytes/sec (the AHA-2944UW provides an effective maximum synchronous transfer rate of 40.0 MBytes/sec for UltraWide devices). If your device is an UltraSCSI device, you can use the maximum value of 20.0 MBytes/sec. If your device is not an UltraSCSI device select a transfer rate of 10.0

MBytes/sec.

If the host adapter is set not to negotiate for synchronous data transfer (that is, Initiate Sync Negotiation is set to No), then the maximum synchronous transfer

6

■ rate is the maximum rate that the host adapter accepts from the device during negotiation. (This is standard SCSI protocol.)

Enable Disconnection —This option determines whether the host adapter allows the SCSI device to disconnect from the SCSI bus (sometimes called

Disconnect/Reconnect). Enabling disconnection allows the host adapter to perform other operations on the SCSI bus while the SCSI device is temporarily disconnected. The default setting is Yes.

Initiate Wide Negotiation — This option determines whether the host adapter attempts 16-bit data transfer (Wide negotiation) instead of 8-bit data transfer.

The default setting is Yes.

Note: Some 8-bit SCSI devices have trouble handling Wide negotiation, which may result in erratic behavior or a hang condition. For these devices, set Initiate Wide Negotiation to No.

When set to Yes, the host adapter attempts 16-bit transfer. When set to No, 8-bit data transfer is used unless the SCSI device itself requests Wide negotiation. The effective transfer rate is doubled when

16-bit data transfer is used because the data path for

Wide SCSI is twice the size of normal 8-bit SCSI. For example, a transfer rate of 10 MBytes/sec becomes 20

MBytes/sec, and a transfer rate of 20 MBytes/sec

(UltraSCSI) becomes 40 MBytes/sec.

Send Start Unit Command —This option determines whether the Start Unit Command is sent to the SCSI device at bootup (most devices do not require this).

The default setting is No.

Setting this option to yes reduces the load on your computer’s power supply by allowing the host adapter to start SCSI devices one-at-a-time when you boot your computer. When set to no, the devices are allowed to start at the same time. Most devices require you to set a jumper before they can respond to this command.

Note: If the Send Start Unit Command is set to yes for many devices, the boot time will vary depending how long it takes each drive to start.

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Include in BIOS Scan —This option determines whether Int 13h devices (hard disk drives) attached to the SCSI bus are recognized by the host adapter BIOS and are installed as devices on the system without the need for device driver software.

Advanced Host Adapter Settings

The advanced host adapter settings should not be changed unless absolutely necessary.

Reset SCSI Bus at IC Initialization —This option allows you to enable or disable SCSI bus resets generated by the host adapter during power-on initialization and after a hard reset. The default setting is

Enabled.

Host Adapter BIOS —This option enables or disables the host adapter BIOS. The default setting is Enabled.

Note: Several SCSISelect options are not valid unless the host adapter BIOS is enabled. See the table on page 5.

If you are booting from a SCSI disk drive connected to the host adapter, the BIOS must be enabled. You should disable the host adapter BIOS if the peripherals on the SCSI bus (for example, CD-ROM drives) are all controlled by device drivers and do not need the BIOS.

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.

– All Disks —All removable-media drives supported by the BIOS are treated as hard disk drives.

– Disabled — No removable-media drives are treated as hard disk drives. In this situation, software drivers are needed because the drives are not controlled by the BIOS.

Caution: If a removable-media SCSI device is controlled by the host adapter BIOS, do not remove the media while the drive is on or you may lose data! If you want to be able to remove media while the drive is on, install your removable-media device driver and set this option to

Disabled .

■ Extended BIOS Translation for DOS Drives > 1

GByte —This option determines whether extended translation is available for SCSI hard disks with capacities greater than 1 GByte. The default setting is

Enabled.

Caution: If you decide to change the translation scheme, back up your disk drives first! All data is erased when you change from one translation scheme to another.

The standard translation scheme for SCSI host adapters provides a maximum accessible capacity of

1 GByte. To support disk drives larger than 1 GByte, the AHA-2944UW includes an extended translation scheme. This scheme supports disk drives as large as

8 GBytes under MS-DOS with a maximum partition size of 2 GBytes.

Extended BIOS Translation is used only with

MS-DOS 5.0 or above. You do not need to enable this option if you are using another operating system such as NetWare, OS/2, Windows NT

, or UNIX.

When you partition a disk larger than 1 GByte, use the MS-DOS fdisk utility as you normally would.

Because the cylinder size increases to 8 MBytes under extended translation, the partition size you choose must be a multiple of 8 MBytes. If you request a size that is not a multiple of 8 MBytes, fdisk rounds up to the nearest whole multiple of 8 MBytes.

Display <Ctrl-A> Message During BIOS Initialization —This option determines whether the message

Press <Ctrl> <A> for SCSISelect (TM) Utility!

appears on your screen during system bootup. The default setting is Enabled. If this setting is disabled, you can still invoke the SCSISelect utility by pressing

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<Ctrl><A> after the host adapter BIOS banner appears.

Multiple LUN Support —This option determines whether booting from a SCSI device that has multiple

LUNs is supported. The default setting is Disabled.

Enable this option if your boot device has multiple

LUNs.

BIOS Support for Bootable CD-ROM —This option determines whether the host adapter BIOS provides support for booting from a CD-ROM drive. The default setting is Enabled.

BIOS Support for Int 13 Extensions —This option determines whether the host adapter BIOS supports disks with more than 1024 cylinders. The default setting is Enabled.

Support for UltraSCSI Speed —This option determines whether the host adapter supports the fast transfer rates of UltraSCSI devices. The default setting is Disabled.

Running SCSISelect

To start the SCSISelect utility, press Ctrl-A when the following prompt appears at boot time:

Press <Ctrl><A> for SCSISelect (TM) Utility!

When the Options menu appears, select Configure/View

Host Adapter Settings or SCSI Disk Utilities.

SCSISelect uses menus to list options you can select. To select an option, use the

↑ and

keys to move the cursor to the option, then press Enter.

In some cases, selecting an option displays another menu.

You can return to the previous menu at any time by pressing Esc. To restore the original SCSISelect default values, press F6. To toggle the display between color and monochrome modes, press F5 (this feature does not work on some monitors).

To exit SCSISelect, press Esc until a message prompts you to exit. If you changed any options, you are prompted to save the changes before you exit. At the prompt, select Yes to exit, then press any key to reboot the computer. Any changes you made in SCSISelect take effect after the computer boots.

Using the SCSI Disk Utilities

To access the SCSI disk utilities, select the SCSI Disk Utili- ties option from the Options menu that appears when you start SCSISelect. SCSISelect immediately scans the SCSI bus and displays a list of all SCSI IDs and the devices assigned to each ID.

When you select a specific ID and device, a small menu appears, displaying the options Format Disk and Verify

Disk Media.

Format Disk —This utility allows you to perform a low-level format on a hard disk drive. 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 nearly all SCSI disk drives.

Verify Disk Media —This utility allows you to scan the media of a hard disk drive for defects. If the utility finds bad blocks on the media, it prompts you to reassign them; if you select Yes, those blocks are no longer used. You can press Esc at any time to abort the utility.

Advanced Setups and

Configurations

Configuring Multiple Host Adapters

Multiple AHA-2944UW host adapters can be installed in your computer; you are limited only by the number of available PCI bus slots (installation and setup is the same as a single AHA-2944UW). Each host adapter you install forms a separate SCSI bus with a different set of SCSI devices.

In computers with multiple host adapters, consider the following:

If you are booting from the AHA-2944UW, you may need to install the boot host adapter in the lowest numbered PCI bus slot. (Most PCI systems do not have this requirement.) Refer to your system documentation to determine the PCI bus slot number.

If you have two AHA-2944UW host adapters and each has a boot device connected, the computer boots from the host adapter in the lowest numbered PCI bus slot. If you want to select a specific host adapter to boot from, enable the BIOS only on that host adapter.

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If you are booting from the AHA-2944UW and you also have an ISA/EISA-based host adapter installed, you must disable the BIOS on the ISA/EISA-based host adapter.

If you are booting from an ISA/EISA-based host adapter and you also have an AHA-2944UW installed with a boot device connected, the ISA/

EISA-based host adapter will boot before the

AHA-2944UW.

When running the SCSISelect utility, if the utility finds multiple AHA-2944UW host adapters in your computer, it displays the PCI bus number and PCI device number of each host adapter. To determine which of the host adapters SCSISelect is configuring, view the red LEDs on the host adapters as you move the highlight bar to different host adapters with the

and

↓ keys. (The computer cover must be removed to view the LEDs.)

Installing Device

Drivers

Some operating systems have an embedded driver for the

AHA-2940UW. These drivers work fine with your

AHA-2944UW; however, the most recent version of the driver should be installed in order for your AHA-2944UW to perform at its optimum level.

If you purchased your AHA-2944UW in a kit, the kit includes the latest Adaptec EZ-SCSI

®

and Adaptec 7800

Family Manager Set software.

■ Adaptec EZ-SCSI —allows you to install software drivers for DOS/Windows

®

and several additional utilities. Refer to the EZ-SCSI Quick Reference.

■ Adaptec 7800 Family Manager Set —allows you to install software drivers for NetWare, OS/2, Windows

®

95, Windows NT, and UNIX. Refer to the 7800

Family Manager Set User’s Guide.

You can order EZ-SCSI or the 7800 Family Manager Set by calling the number listed on page 11.

Need Assistance?

Troubleshooting Tips

If you have a problem during installation, check these 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 all devices on the SCSI bus have unique SCSI IDs?

Is pin-1 orientation maintained throughout the SCSI bus? (See Connecting Internal SCSI Devices on page 3.)

Are all devices on the SCSI bus terminated properly?

Does your system CMOS setup require you to enable

PCI bus parameters? If so, see your computer’s documentation. Check that IRQ channel assignment, board, and BIOS settings have been made.

Did you install your host adapter in a bus master PCI slot? Refer to your computer’s documentation or try another slot.

Is parity checking consistently enabled or disabled on all devices on the SCSI bus?

Computer Will Not Boot from a SCSI Disk

Drive

If both SCSI and non-SCSI disk drives are installed, then the non-SCSI disk drive is always the boot device. If the system has only SCSI disk drives, do the following:

1 Make sure the drive type in your computer’s CMOS setup is set to No Drives Installed.

2 Make sure the boot hard disk SCSI ID corresponds to the Boot Target ID setting in SCSISelect. The SCSI ID is normally set with jumpers or switches on the drive.

3 If this does not solve the problem, back up all data on the SCSI hard disk and perform a low-level format with the SCSISelect Format Disk option. See the

MS-DOS documentation for instructions on partitioning the disk after formatting.

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Other Problems and Solutions

If you changed any values on a host adapter, in a setup program, or on a SCSI device, did you turn the power OFF and ON to ensure that the new values are loaded?

If you tried to use the format/verify utility on a disk device and got an Unexpected SCSI Command Failure pop-up box with error information, the utility probably encountered a problem with the disk device or the media and therefore cannot run.

You can probably determine from the Sense Key information (e.g., 06h - Unit Attention) both the cause of the problem and its solution. Here are some of the more common Sense Key values and their meanings:

– 02h - Not ready— The media is not ready to format. Be sure that media is inserted in the drive and that the media is spun up.

– 03h - Medium error— The disk media may be defective. If it is a removable-media drive, try using a different disk media. If it is a hard disk drive, the disk may be physically damaged. Verify and format the media with SCSISelect.

– 04h - Hardware error— The disk drive may be defective. Consult the hardware documentation and contact the manufacturer.

– 06h - Unit attention— The removable media may be write-protected. Disable write protection and run the utility again.

BIOS Startup Messages

If the host adapter BIOS is enabled, but it fails to initialize, the system displays a specific error message followed by a BIOS Installation Failure message. Here are some of these error messages and their meaning:

Device connected, but not ready.

The host adapter received no answer when it requested data from an installed SCSI device. Try setting the Send

Start Unit Command to Yes for the host adapter.

If the message still appears, follow the drive manufacturer’s instructions to make sure the drive is set to spin up when the power is switched ON.

Start unit request failed.

The BIOS was unable to send a Start Unit Command to the device. Run the SCSISelect utility and disable Send

Start Unit Command for the device.

Time-out failure during …

An unexpected time-out occurred. Check SCSI bus termination. Try disconnecting the SCSI peripheral cables from the host adapter and then starting the computer. If the computer successfully restarts, check SCSI bus termination and cable connections. One of the devices on the

SCSI bus may be defective.

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10

Contacting Adaptec

If you have questions about installing or using your Adaptec product, check this installation guide first—you will find answers to most of your questions here. If you need further assistance, please contact us. We offer the following support and information services:

Electronic Support

Technical information, including product literature, answers to commonly asked questions, information on software upgrades and other topics is available electronically through the following:

Adaptec World Wide Web (WWW) site at http://www.adaptec.com

.

File Transfer Protocol (FTP) server at ftp.adaptec.com

.

CompuServe Adaptec Forum at GO ADAPTEC .

Adaptec USA Bulletin Board Service (BBS) at 408-945-7727; supports up to 28,800 bps (bits per second), 8 data bits,

1 stop bit, no parity. No product literature is available on the

Adaptec BBS.

Interactive Fax System at 408-957-7150.

Technical and Product Support

■ For technical support and information about many of

Adaptec’s electronic support services, call 800-959-7274 or

408-945-2550, 24 hours a day, 7 days a week.

To use the Adaptec Interactive Support System, call

800-959-7274 or 408-945-2550, 24 hours a day, 7 days a week.

The system prompts you with questions regarding your problem and then provides step-by-step troubleshooting instructions.

To speak with a product support representative, call

408-934-7274, M–F, 6:00 A .

M . to 5:00 P .

M ., Pacific Time.

After hours, on weekends, and on holidays, product support is also available for a fee at 800-416-8066.

Sales and Ordering Information

For sales information, call 800-959-7274 or 408-945-2550,

M–F, 6:00 A .

M . to 5:00 P .

M ., Pacific Time.

To order Adaptec software and SCSI cables, call 800-442-7274 or 408-957-7274, M–F, 6:00 A .

M . to 5:00 P .

M ., Pacific Time.

To request additional documentation for Adaptec products, call 800-934-2766 or 510-732-3829, M–F, 6:00 A .

M . to 5:00 P .

M .,

Pacific Time.

Federal Communications Commission Radio Frequency

Interference Statement

WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user ’s authority to operate the equipment.

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 a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. However, 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 interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between equipment and receiver.

■ Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

■ Consult the dealer or an experienced radio/television technician for help.

Use a shielded and properly grounded I/O cable and power cable to ensure compliance of this unit to the specified limits of the rules.

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.

Canadian Compliance Statement

This Class B digital apparatus meets all requirements of the Canadian

Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les exigences du

Règlement sur le matérial brouilleur du Canada.

11

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