Adaptec 29160LP - SCSI Card Storage Controller U160 160... Service manual

USER’S
REFERENCE
ADAPTEC SCSI CARD 29160LP
ULTRA160 SCSI CONTROLLER

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Adaptec, Inc.
691 South Milpitas Boulevard
Milpitas, CA 95035
© 2000 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.: 512591-03, Rev. A DR 05/2000
(SRC: 512591-00, Ver. AA)

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Adaptec SCSI Card 29160LP
Ultra160 SCSI Controller
User’s Reference

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Contents
Overview 1
Ultra160 SCSI on the Adaptec SCSI Card 29160LP 1
Understanding SCSI 1
SCSI IDs 2
Terminating the SCSI Bus 3
Troubleshooting 4
Troubleshooting Checklist 4
Troubleshooting in Windows 95/98 5
Common Error Messages 9
Using the Adaptec SCSI Card 29160LP and SCSI
Devices 10
Using SCSI Devices 10
SCSI Hard Disk Drives 10
Ultra160 Hard Disk Drives 11
Combining SCSI and Non-SCSI Devices 12
Installing Multiple SCSI Cards 13
Connecting the LED Connector 13
Configuring the
Adaptec SCSI Card 29160LP with SCSISelect 14
Starting SCSISelect 16
Exiting SCSISelect 16
Using SCSISelect Settings 16
SCSI Bus Interface Definitions 17
Boot Device Options 17
SCSI Device Configuration 17
Advanced Configuration Options 19
Using SCSI Disk Utilities 21

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Adaptec SCSI Card 29160LP User’s Reference
Connecting SCSI Devices 22
Maximum Cable Lengths 23

1
Overview
Ultra160 SCSI on the Adaptec SCSI Card
29160LP
The Adaptec SCSI Card 29160LP supports Ultra160 SCSI devices.
Ultra160 is a new generation of SCSI technology that expands SCSI
performance.
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 29160LP settings.
Note: Read the Adaptec SCSI Card 29160LP Installation Guide
if you need instructions on installing the SCSI Card, or con-
necting SCSI devices to it.
The Adaptec SCSI Card 29160LP was designed for Low Profile
systems (cases); however Adaptec provides an additional bracket
that can be installed for use with standard system cases.
Understanding SCSI
SCSI (pronounced “scuzzy”) stands for Small Computer Systems
Interface. SCSI is an industry standard computer interface for
connecting SCSI devices 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 29160LP) installed in a

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Adaptec SCSI Card 29160LP User’s Reference
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 29160LP, as well as
the Adaptec SCSI Card 29160LP 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 29160LP and each device has a different
number. 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 29160LP 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.
■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.

3
Overview
■If you are booting your computer from a SCSI hard disk drive
connected to the Adaptec SCSI Card 29160LP, 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 Target ID is set to 0. We recommend that you do not
change this setting.
■In Windows®95/98, you can use the Device Manager to deter-
mine 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 SCSI cable, which has a
built-in terminator at its end.
■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.
■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.
■By default, termination on the Adaptec SCSI Card 29160LP
itself is set to Automatic (the preferred method). We recom-
mend that you do not change this default setting.

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Adaptec SCSI Card 29160LP User’s Reference
Troubleshooting
Most problems can be resolved by following the recommendations
in the Troubleshooting Checklist below. If you still experience
problems after following the recommendations, continue with the
rest of this section.
Troubleshooting Checklist
Most problems with using the Adaptec SCSI Card 29160LP result
from errors in preparing and connecting devices on the SCSI bus. If
you have problems, check these items first:
■Are all SCSI devices turned on?
■Are all SCSI cables and power cables properly connected?
■Is the Adaptec SCSI Card 29160LP firmly seated and secured in
the PCI expansion slot?
■Is the PCI expansion slot compliant with PCI Rev. 2.1 or higher,
and does it support Bus Mastering?
■Are all SCSI devices and the Adaptec SCSI Card 29160LP
assigned unique SCSI IDs?
■Are all SCSI devices terminated properly?
Note: If you have problems with a specific SCSI device when
other connected SCSI devices are working correctly, please
contact the manufacturer of the problem device for trouble-
shooting information.