Adaptec 29320A Manual de usuario

ADAPTEC SCSI CARD 29320A

INSTALLATION GUIDE

ASC-29320A IG.fm Page 0 Tuesday, July 29, 2003 3:30 PM

Introduction

The Adaptec SCSI Card 29320A enables you to connect up to 15

Low Voltage Differential (LVD) and/or 15 Single-Ended (SE) SCSI

devices—such as very large arrays of high-performance hard disk

drives, external storage subsystems, Ultra320/160 hard disk drives,

scanners, and CD-ROM drives—to any Intel-based computer with

64- or 32-bit PCI/PCI-X expansion slots.

The Adaptec SCSI Card 29320A has one internal and one external

68-pin LVD connector and two internal SE SCSI connectors (one

68-pin and one 50-pin).

Although the Adaptec SCSI Card 29320A is a 64-bit PCI/PCI-X

card, it also works in a 32-bit PCI slot. When installed in a 32-bit

PCI slot, the card automatically runs in the slower 32-bit mode.

This installation guide explains how to:

■Install the Adaptec SCSI Card 29320A

■Set up SCSI devices

■Connect SCSI devices

68-pininternalLVD

connector 68-pin internal SE

connector

68-pinexternal

LVD connector

50-pin internal SE

connector

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Installing the Adaptec SCSI Card 29320A

1Discharge 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).

Warning: Turn OFF power to the computer and disconnect

the power cord.

2After you turn off your computer and unplug the power cord,

remove the cover from the computer.

3Locate an unused 64-bit PCI/PCI-X expansion slot and remove

the expansion slot cover. If the computer does not have a 64-bit

slot, you can install the card in a 32-bit PCI slot. The Adaptec

SCSI Card 29320A supports both 5V and 3.3V 64-bit slots. (The

expansion slot must be compliant with PCI Rev. 2.1 or PCI-X

Rev. 1.0 and must support Bus Mastering.) Save the slot cover

screw for use in Step 4.

Slot cover screw

Expansion slot cover

64-bit PCI slot

32-bitPCI slot

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Computers may have vertical or horizontal expansion slots.

Refer to your computer manual to locate the PCI/PCI-X slots. If

your computer is a tower model, lay it on its side to allow for

easier installation of the Adaptec SCSI Card 29320A.

Warning: Be careful when inserting the Adaptec SCSI Card

29320A in a PCI slot. Some 32-bit slots will not

accommodate it, and the card may break if you force it into

the slot.

4Insert the Adaptec SCSI Card 29320A in the 64-bit (or 32-bit)

PCI or PCI-X expansion slot; press down firmly until the card

clicks into place, then replace the slot cover screw. When

installed properly, the card should appear level with the

expansion slot, as shown below.

Setting Up SCSI Devices

There are several things you may need to do to your SCSI devices

before you connect them to the Adaptec SCSI Card 29320A:

■Check the SCSI IDs

■Set the termination

■Connect the power cables

Since setup can vary from device to device, always refer to the

device’s documentation for specific instructions.

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Following are some guidelines for setting SCSI IDs and termination

on your devices.

Check the SCSI IDs

The Adaptec SCSI Card 29320A and each device you connect to it

must have a unique SCSI ID number ranging from 0 to 15 on each

channel. No two devices on the same SCSI channel can have the

same SCSI ID.

The Adaptec SCSI Card 29320A is preset to ID 7 for each channel

and should not be changed. If you boot from a SCSI hard disk,

make sure the hard disk SCSI ID is set to 0. (Most SCSI hard disks

are preset to SCSI ID 0 at the factory.) The SCSI IDs for internal

devices are usually set with jumpers; SCSI IDs for external devices

are usually set with a switch on the back of the device.

Terminate the Ends

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

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

terminator installed (or enabled). Terminators must be removed, or

termination must be disabled, on devices between the ends of each

cable.

Note: When connecting Ultra320/160 or Ultra2 SCSI devices,

the SCSI bus must be terminated either on the end of the cable

(with a permanent terminator) or with a separate terminating

connector. Ultra SCSI and earlier single-ended devices can

terminate the bus directly from the device. If you use an Ultra

SCSI terminator on an LVD Ultra320/160 and Ultra2 SCSI

bus, the SCSI devices will not operate properly. For this

reason be sure that you have the necessary Ultra320/160 or

Ultra2 cable and terminator before installing the Ultra320/160

SCSI devices.

Connecting SCSI Devices

You can connect a total of 15 LVD and/or 15 SE SCSI devices to the

Adaptec SCSI Card 29320A. Before connecting devices, be sure to

review Setting Up SCSI Devices on page 3.

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Connecting Internal Ultra320/160 and Ultra2 Devices

A special 68-pin internal LVD cable is needed to connect internal

Ultra320/160 or Ultra2 SCSI devices. If your cables are not marked,

you can identify most LVD cables as having twisted pairs of the flat

ribbon cable between the device connectors. Some cables are

laminated so that they lay flat. Internal LVD cables usually have a

terminator built into the end of the cable.

The Adaptec SCSI Card 29320A has one internal 68-pin LVD

connector and two internal SE connectors to which you can connect

internal SCSI devices, as shown in the figure on page 1.

Note: Adaptec recommends that you keep your Ultra320/160

and Ultra2 SCSI devices separate from your Ultra SCSI

devices. This allows the Ultra320/160 and Ultra2 SCSI

devices to transfer data at their maximum speed.

Follow these steps to connect your internal Ultra320/160 and

Ultra2 devices:

1Locate a 68-pin internal LVD SCSI cable, which may have either

twisted wires or flat wires, shown as follows.

Nonterminated end

Terminated end

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2Plug the nonterminated end of the cable(s) to the internal LVD

connector.

3Plug the internal Ultra320/160 and Ultra2 SCSI devices to the

other cable connectors, starting with the connector at the

terminated end of the cable.

Note: Internal Ultra320/160 and Ultra2 SCSI devices come

from the factory with termination disabled and cannot be

changed. Proper termination is provided by the terminator

at the end of the LVD SCSI cable.

4Connect a power cable from your computer’s internal power

supply to each internal SCSI device.

Ultra320/160 or Ultra2

SCSI devices

Built-in terminator on cable

Plug first device to

this connector

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Connecting Wide SCSI Devices

Connect internal Wide SCSI devices to the 68-pin internal SE Wide

SCSI connector. To do this, use a 68-pin Wide SCSI cable like the

one shown in Step 1 below. Follow these steps to connect the

devices:

1Locate a 68-pin internal Wide SCSI cable.

2Plug one end of the cable to the Wide SCSI connector on the

Adaptec SCSI Card 29320A.

3Plug the other end of the cable to a terminated Ultra/Fast Wide

SCSI device.

4If you have other Ultra/Fast Wide SCSI devices, attach them to

the connectors between the two ends of the cable. Be sure these

other devices are unterminated.

5Connect a power cable from your computer’s internal power

supply to each internal device.

Connecting Internal Ultra/Fast Narrow Devices

Connect internal Ultra/Fast Narrow SCSI devices that have

standard 50-pin connectors to the 50-pin internal SE Narrow SCSI

connector. To do this, use a 50-pin internal Ultra Narrow SCSI

cable. Follow these steps to connect the devices:

1Locate a 50-pin internal Ultra Narrow SCSI cable.

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2Plug one end of the cable to the 50-pin internal SE Narrow SCSI

connector on the Adaptec SCSI Card 29320A.

3Plug the other end of the cable to a terminated Ultra/Fast

Narrow SCSI device.

4If you have other Ultra/Fast Narrow SCSI devices, attach them

to the connectors between the two ends of the cable. Be sure

these other devices are unterminated.

5Connect a power cable from your computer’s internal power

supply to each internal device.

Connecting External SCSI Devices

You can connect external Ultra320/160 and Ultra2 SCSI devices to

the 68-pin external LVD SCSI connector. Each external device will

require a 68-pin LVD external LVD SCSI cable.

Note: We recommend that you do not combine older SCSI

devices with the newer Ultra320/160 and Ultra2 SCSI devices

on the same SCSI channel of the Adaptec SCSI Card 29320A.

Follow these steps to connect your external SCSI devices:

1Connect one end of an external SCSI cable to one of the external

Ultra320/160 connectors on the Adaptec SCSI Card 29320A.

68-pin external

LVD SCSI connector External LVD SCSI

cable

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2Connect the other end of the cable to a SCSI connector on the

back of an external device. If you are installing only one

external device, terminate the device and skip to Step 4.

3Connect the other external SCSI devices by linking each device

to the previous one, as shown below. Terminate only the device

at the end of the chain.

4Connect power cables to all external device(s) and to the

computer.

SCSI terminator

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