Adaptec AHA-2940U2 User manual

INTRODUCTION

With SCSI Card 2940U2W, you can connect up to 15 SCSI peripherals,

such as hard disk drives, scanners, CD-ROM drives, tape drives, to any

IBM-compatible computer with PCI expansion slots.

This installation guide provides instructions for:

• Installing the SCSI Card 2940U2W

• Connecting SCSI peripherals

• Installing SCSI Card 2940U2W software

See the SCSI Card 2940U2W User’s Reference for additional informa-

tion on using the SCSI Card 2940U2W.

Check the Kit Contents

Your SCSI Card 2940U2W kit should contain the following items:

SCSI Card 2940U2W

High-density 68-pin Internal Ultra SCSI Cable

Standard 50-pin Internal Ultra SCSI Cable

High-density 68-pin Internal Ultra2 SCSI Cable

Standard 50-pin Internal-to-High-density

50-pin External Ultra SCSI Cable (With

Two Internal Connectors)

Manuals

Disks and

CD-ROM

Bus Segments on the SCSI Card 2940U2W

The SCSI Card 2940U2W features Adaptec SpeedFlex™ technology.

SpeedFlex technology ensures that you get the most performance from

your Ultra2 SCSI peripherals by electronically isolating the Ultra2 SCSI

segment from the Ultra SCSI segment on the SCSI bus. With the

SpeedFlex advantage, the SCSI Card 2940U2W can support Ultra2

SCSI peripherals at speeds up to 80 MBytes/sec while simultaneously

supporting Wide Ultra/Ultra (legacy) peripherals at speeds up to 40

MBytes/sec.

Attaching Wide Ultra/Ultra SCSI peripherals to the Ultra2

SCSI segment of the SCSI bus causes the Ultra2 SCSI segment and

any attached peripherals to drop to Ultra SCSI performance levels

(40 MBytes/sec). Attaching only Ultra2 peripherals to the Ultra2

segment, ensures that all peripherals on the Ultra2 segment will

perform at Ultra2 performance levels (80 MBytes/sec).

Attaching an Ultra2 peripheral to the Ultra SCSI segment causes the

Ultra2 peripheral to drop to Ultra SCSI performance levels instead

of Ultra2 SCSI performance levels at which it is designed to run.

NOTE

Ultra2 SCSI

Segment

68-pin External

Ultra2 Connector

68-pin Internal

Ultra2 Connector 68-pin Internal

Wide Ultra Connector

50-pin Internal

Ultra Connector

Ultra SCSI

Segment

AIC-3860

AIC-7890

Discharge any static electricity build-up before handling your SCSI

card by touching a grounded metal object (like the exposed metal

parts on the back of your computer).

After you turn off your computer and unplug the power cord, remove

the cover from the computer.

Refer to your computer manual for instructions on removing the cover.

Locate an unused PCI expansion

slot and remove the expansion slot

cover. (The expansion slot must be

PCI Rev. 2.1 or higher compliant

and support Bus Mastering.) Save

the slot cover screw for use in

Step 4.

Computers may have

vertical or horizontal

expansion slots. Refer

to your computer

manual to locate the

PCI slots. If your

computer is a tower

model, lay it on its

side to allow for easier

installation of the

SCSI Card 2940U2W.

INSTALLING THE SCSI CARD 2940U2W

Turn OFF power to the computer and disconnect the

power cord.

WARNING

STEP 1

STEP 2

STEP 3

PCI Expansion Slots

(Typically White or Ivory)

Slot Cover Screw

Expansion

Slot Cover

Insert the SCSI Card 2940U2W into the PCI expansion slot; press

down firmly until it clicks into place, then replace the slot cover screw.

SCSI Card 2940U2W Installed

in a PCI Expansion Slot

If you refer to the peripheral’s documentation for installa-

tion instructions, be sure to return to this document to continue

with installation of the software included in the package.

NOTE

Check the SCSI IDs

The SCSI Card 2940U2W and each peripheral you connect to it

requires a unique SCSI ID number ranging from 0 to 15. ID numbers

don’t have to be sequential, as long as the SCSI Card 2940U2W and

each peripheral has a different number.

The SCSI Card 2940U2W is preset to ID 7 and should not be changed.

If you will be booting from a SCSI hard disk, it’s best to set the disk’s ID

at 0 or 1. Most SCSI hard disks come from the factory preset to ID 0.

The IDs for internal peripherals are usually set with jumpers; external

peripherals are usually set with a switch on the back of the peripheral.

Terminate the Ends

To ensure reliable communication on the SCSI bus, the peripheral at

the end of each cable, or the end of the cable itself, must have a termi-

nator installed (or enabled). The peripherals between the ends of each

cable must have the terminator removed (or disabled).

Setting up SCSI peripherals before attaching them to the SCSI Card

2940U2W typically involves setting SCSI IDs and termination, mount-

ing internal peripherals inside your computer, and connecting power

cables to each peripheral. Since setup can vary from peripheral to

peripheral, always refer to the peripheral’s documentation for specific

instructions. Below are some guidelines for setting SCSI IDs and ter-

mination on your peripherals.

SETTING UPSCSI PERIPHERALS

STEP 4

A total of 15 SCSI peripherals can be connected to the SCSI Card

2940U2W. Before connecting peripherals to the SCSI Card 2940U2W,

be sure to also review Setting Up SCSI Peripherals on page 3.

68-pin Internal Ultra2 SCSI Connector

Use the 68-pin internal Ultra2 SCSI connector to connect internal

Ultra2 peripherals. The connector is an Ultra2 Low Voltage

Differential, Single Ended (Ultra2-LVD/SE) connector. The internal

Ultra2 cable included in the kit allows up to four internal Ultra2

peripherals. If you have more than four Ultra2 peripherals, you will

need to obtain an Ultra2 cable with enough connectors to accommo-

date all of your Ultra2 peripherals. Follow these steps to connect your

internal Ultra2 peripherals:

We recommend keeping your Ultra2 peripherals separate

from your non-Ultra2 peripherals. Connecting a non-Ultra2

peripheral to the Ultra2 SCSI connector forces the Ultra2 SCSI seg-

ment and any attached peripherals to drop down to Ultra SCSI per-

formance levels (40 MBytes/sec). (See “Bus Segments on the SCSI

Card 2940U2W” on page 2.)

NOTE

Locate the 68-pin internal Ultra2 SCSI cable in the package.

CONNECTING SCSI PERIPHERALS

STEP 1

STEP 2

Built-in Terminator

Connect to Ultra2 Peripherals

Connect to

SCSI Card 2940U2W

Connectors Labeled

“Ultra2-LVD/SE”

68-pin Internal Ultra2

SCSI Connector

68-pin Internal Ultra2 SCSI Cable

Plug the long end of the cable to the Ultra2 connector on the SCSI

Card 2940U2W (connectors are labeled “Ultra2-LVD/SE”).

Plug the remaining connectors to your internal Ultra2 SCSI peripherals.

STEP 3

STEP 1

Connect to SCSI Card 2940U2W

Connect to Fast/Wide Ultra

Peripheral (Terminated)

Connect to Fast/Wide Ultra

Peripheral (Not Terminated)

Built-in Terminator on Cable

Ultra2 SCSI Peripherals (Ultra2-LVD/SE)

68-pin Internal Wide Ultra SCSI Connector

Use the 68-pin internal Wide Ultra SCSI connector to connect internal

Fast/Wide Ultra SCSI peripherals that have 68-pin connectors. Do not

connect Ultra2 peripherals to this connector.

The 68-pin internal Ultra SCSI cable included in the kit allows you to

to connect up to two Fast/Wide Ultra peripherals. If you have more

than two Fast/Wide Ultra peripherals, you will need to obtain a 68-pin

cable with enough connectors to accommodate all of your Fast/Wide

Ultra peripherals. Follow these steps to connect your internal

Fast/Wide Ultra peripherals.

Locate the 68-pin internal Ultra SCSI cable in the package.

Internal Ultra2 SCSI peripherals come from the factory

with termination disabled and cannot be changed. Proper termina-

tion is provided by the built-in terminator at the end of the Ultra2

internal SCSI cable provided in the kit.

NOTE

50-pin Internal Ultra SCSI Connector

Use the 50-pin internal Ultra SCSI connector to connect internal or

external Fast/Ultra Narrow SCSI peripherals that have standard 50-pin

connectors.

Internal Fast/Ultra Narrow SCSI Peripherals

The 50-pin internal cable included in the kit allows you to connect up

to two standard internal SCSI peripherals. If you have more than two

standard internal 50-pin peripherals, you will need to obtain a 50-pin

cable with enough connectors to accommodate all of your standard

peripherals. Follow these steps to connect your standard internal

Fast/Ultra Narrow peripherals:

Locate the 50-pin internal Ultra SCSI cable in the package.

(Continued on the other side)

STEP 2

STEP 3

STEP 4

STEP 1

Plug the other end of the cable to a terminated Fast/Wide Ultra SCSI

peripheral.

To connect a second Fast/Wide Ultra

SCSI peripheral, plug the middle

connector of the cable to the

peripheral. The peripheral must

not be terminated.

Connect to SCSI Card 2940U2W

Connect to Fast/Ultra Narrow

Peripheral (Not terminated)

Connect to Fast/Ultra Narrow

Peripheral (Terminated)

68-pin Internal Wide Ultra SCSI Connector

Terminated SCSI Peripheral Unterminated SCSI Peripheral

Plug the long end of the cable to the 68-pin internal Ultra SCSI

connector on the SCSI Card 2940U2W.

68-pin Internal Wide Ultra SCSI Cable

Plug the other end of the cable to a terminated Fast/Ultra

Narrow SCSI peripheral.

To connect a second Fast/Ultra Narrow

SCSI peripheral, plug the middle

connector of the cable to the

peripheral. The peripheral must

not be terminated.

STEP 1

STEP 3

STEP 4

External Fast/Ultra Narrow SCSI Peripherals

The 50-pin internal-to-high-density 50-pin external Ultra SCSI cable,

also included in the kit, allows you to connect your standard external

SCSI peripherals and up to two standard internal SCSI peripherals. For

each external peripheral, you will need to obtain a 50-pin external SCSI

cable. Follow these steps to connect your standard external peripherals:

Secure to Card Slot Opening in

Computer Chassis Connect to Fast/Ultra Narrow Internal

Peripherals (Not terminated)

Connect to SCSI Card 2940U2W

STEP 2Plug the long end of the cable to the 50-pin connector on the SCSI

Card 2940U2W.

50-pin Internal Ultra SCSI Connector

50-pin Internal Ultra SCSI Cable

Terminated SCSI Peripheral Unterminated SCSI Peripheral

Locate the 50-pin internal-to-high-density 50-pin external Ultra SCSI

cable in the package.

This cable enables you to keep external Ultra SCSI periph-

erals without impeding the performance of your Ultra2 SCSI

peripherals. (See “Bus Segments on the SCSI Card 2940U2W” on

page 2.)

NOTE

Secure the mounting bracket of the cable to the exposed card slot

opening in the chassis of the computer.

STEP 2

STEP 3

STEP 4

Remove an available slot cover from the chassis of the computer.

Plug one end of the cable to the 50-pin internal Ultra SCSI connector

on the SCSI Card 2940U2W.

50-pin Internal Ultra SCSI Connector

Standard 50-pin Internal-to-High-density

50-pin External Ultra SCSI Cable

Use these connectors on the cable to

connect up to two internal Fast/Ultra

Narrow SCSI peripherals, These

peripherals must not be terminated.

Remove Slot Cover (Preferably

Next to the SCSI Card 2940U2W)

STEP 5

STEP 6

STEP 7

STEP 8

Connect one end of the external

SCSI cable to the 50-pin external

connector on the internal-to-

external cable.

Connect the other end of the exter-

nal SCSI cable to a SCSI connector

on the back of the external SCSI

peripheral. If you are installing

only one external peripheral, ter-

minate the peripheral and

skip to Step 8.

Connect other external peripherals by connecting each peripheral to

the previous one until all peripherals are connected. The peripheral at

the end of the chain must be the only exter-

nal peripheral terminated.

Connect all power cables to the external peripherals.

High-density 50-pin

External SCSI Cable

(Not Included in Kit)

SCSI Terminator

(Not Included in Kit)

Terminated SCSI

Peripheral

High-density 50-pin External Connector

68-pin External Ultra2 SCSI Connector

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