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

USER’S
REFERENCE
ADAPTEC SCSI CARD 19160
ULTRA160 SCSI CONTROLLER

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© 1999 Adaptec, Inc.
All rights reserved. Adaptec, and the Adaptec logo
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

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▼ ▼ ▼ ▼ Adaptec SCSI Card 19160
Ultra160 SCSI Controller
User’s Reference

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▼ ▼ ▼ ▼ 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

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Adaptec SCSI Card 19160 User’s Reference
4 Configuring the
Adaptec SCSI Card 19160 with SCSI
Select
17
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

1
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.

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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.

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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.

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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.