Adaptec 19160 - SCSI Card Storage Controller U160 160... Service-Handbuch

USER’S

REFERENCE

ADAPTEC SCSI CARD 19160

ULTRA160 SCSI CONTROLLER

are trademarks of Adaptec, Inc. which may be

registered in some jurisdictions.

Printed in Singapore

STOCK NO.: 512488-03, Rev. A KrL 12/99

(SRC: 512488-00, Ver. AA)

Adaptec, Inc.

691 South Milpitas Boulevard

Milpitas, CA 95035

▼ ▼ ▼ ▼ Adaptec SCSI Card 19160

Ultra160 SCSI Controller

User’s Reference

iii

▼ ▼ ▼ ▼ Contents

1Overview1

Ultra160 SCSI on the Adaptec SCSI Card 19160 1

Understanding SCSI 2

SCSI IDs 2

Terminating the SCSI Bus 3

2 Troubleshooting 5

Troubleshooting Checklist 5

Troubleshooting in Windows 95/98 6

Common Error Messages 10

3 Using the Adaptec SCSI Card 19160 and SCSI

Devices 12

Using SCSI Devices 12

SCSI Hard Disk Drives 12

Using SCSI Hard Disk Drives 12

Using Ultra160 Hard Disk Drives 13

Using Scanners 13

Combining SCSI and Non-SCSI Devices 14

Installing Multiple SCSI Cards 15

Connecting the LED Connector 16

Adaptec SCSI Card 19160 User’s Reference

4 Configuring the

Adaptec SCSI Card 19160 with SCSI

Select

Starting SCSISelect 19

Exiting SCSISelect 19

Using SCSISelect Settings 19

SCSI Bus Interface Definitions 20

Boot Device Options 20

SCSI Device Configuration 20

Advanced Configuration Options 22

Using SCSI Disk Utilities 24

5 Connecting SCSI Devices 25

Maximum Cable Lengths 26

Overview

Ultra160 SCSI on the Adaptec SCSI Card 19160

The Adaptec SCSI Card 19160 supports Ultra160 SCSI devices.

Ultra160 is a new generation of SCSI technology that transfers data

at up to 160 MBytes/sec. In addition to providing much greater

performance, Ultra160 SCSI increases the maximum allowable cable

length from 3 meters to 12 meters1for improved connectivity and

flexibility.

The Adaptec SCSI Card 19160 combines this Ultra160 SCSI

technology with Adaptec’s SpeedFlex™ technology. SpeedFlex

allows the Adaptec SCSI Card 19160 to be backwards compatible

with previous generations of SCSI products, while allowing newer

Ultra160 SCSI devices to operate at the higher 160 MBytes/sec rate

and increased cable length.

This User’s Reference provides information about troubleshooting,

SCSI termination, and other important topics. It also explains how to

use the built-in SCSISelect utility if you need to change the Adaptec

SCSI Card 19160 settings.

Note:

Read the Adaptec SCSI Card 19160 Installation Guide if

you need instructions on installing the SCSI Card or con-

necting SCSI devices to it.

1 When only one Ultra2 or Ultra160 device is connected, the cable length may

be up to 25 meters (82 ft.). See Maximum Cable Lengths on page 26.

Adaptec SCSI Card 19160 User’s Reference

Understanding SCSI

SCSI (pronounced “scuzzy”) stands for Small Computer Systems

Interface. SCSI is an industry standard computer interface for

connecting SCSI devices (such as a hard disk drive, CD-ROM drive,

or scanner) to a common SCSI bus.

A SCSI bus is an electrical pathway that consists of a SCSI adapter

card (such as the Adaptec SCSI Card 19160) installed in a computer

and one or more SCSI devices. SCSI cables are used to connect the

devices to the SCSI adapter card.

For the SCSI bus to function properly, a unique SCSI ID must be

assigned to the SCSI card and each SCSI device connected to it, and

the SCSI bus must be properly terminated.

SCSI IDs

Each device attached to the Adaptec SCSI Card 19160, as well as the

Adaptec SCSI Card 19160 itself, must be assigned a unique SCSI ID

number from 0 to 15. A SCSI ID uniquely identifies each SCSI device

on the SCSI bus and determines priority when two or more devices

are trying to use the SCSI bus at the same time.

Refer to the device’s documentation to set the SCSI ID. Here are

some general guidelines for SCSI IDs:

■For internal SCSI devices, the SCSI ID usually is set by config-

uring a jumper on the device.

■For external SCSI devices, the SCSI ID usually is set with a

switch on the back of the device.

■SCSI ID numbers don’t have to be sequential, as long as the

Adaptec SCSI Card 19160 and each device has a different num-

ber. For example, you can have an internal SCSI device with ID

0, and an external SCSI device with ID 6.

■SCSI ID 7 has the highest priority on the SCSI bus. The priority

of the remaining IDs, in descending order, is 6 to 0, 15 to 8.

■The Adaptec SCSI Card 19160 is preset to SCSI ID 7 and should

not be changed. This gives it the highest priority on the SCSI

bus.

■Most internal SCSI hard disk drives come from the factory pre-

set to SCSI ID 0.

Overview

■If you have 8-bit (or Narrow) SCSI devices, they must use SCSI

IDs 0, 1, 2, 3, 4, 5, or 6. SCSI ID 0 is recommended for the first

SCSI hard disk drive.

■If you are booting your computer from a SCSI hard disk drive

connected to the Adaptec SCSI Card 19160, the Boot Target ID

setting in the SCSISelect utility must correspond to the SCSI ID

of the device from which you are booting. By default, the Boot

SCSI ID is set to 0. We recommend that you do not change this

setting.

■You can view or confirm SCSI ID assignments using the

SCSISelect disk utility. See Configuring the Adaptec SCSI Card

19160 with SCSISelect on page 17.

■In Windows®95/98, you can use the Device Manager to view

which SCSI ID is assigned to each installed SCSI device.

Terminating the SCSI Bus

To ensure reliable communication on the SCSI bus, the ends of the

SCSI bus must be properly terminated. This is accomplished when

the device at the end of each cable, or the end of the cable itself, has a

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

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

cable.

Since the method for terminating a SCSI device can vary widely,

refer to the device’s documentation for instructions on how to

enable or disable termination. Here are some general guidelines for

termination:

■Internal Ultra160 and Ultra2 SCSI devices come from the fac-

tory with termination disabled and cannot be changed. Proper

termination for internal Ultra160 and Ultra2 SCSI devices is

provided by a 68-pin Internal LVD (Low Voltage Differential)

SCSI cable, which either has a built-in terminator at its end, or

has a terminator installed on the last connector on the cable.

■Termination on non-Ultra160 and Ultra2 internal SCSI devices

usually is controlled by manually setting a jumper or a switch

on the device, or by physically removing or installing one or

more resistor modules on the device.

Adaptec SCSI Card 19160 User’s Reference

■Termination on external SCSI devices usually is controlled by

installing or removing a SCSI terminator. However, termina-

tion on some external devices is enabled or disabled by setting

a switch on the back of the SCSI device.

■Some devices use automatic termination. Be sure to check the

documentation for the device to be certain that the device is

correctly terminated.

■By default, termination on the Adaptec SCSI Card 19160 itself

is set to Automatic (the preferred method). We recommend that

you do not change this default setting.

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