Adaptec 39160 Bedienungsanleitung
USER’S
REFERENCE
ADAPTEC SCSI CARD 39160
ULTRA160 SCSI CONTROLLER
R
© 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.: 512478-03, Rev. A KGL 11/99
(SRC: 512478-00, Ver. AA)
Adaptec, Inc.
691 South Milpitas Boulevard
Milpitas, CA 95035
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▼ ▼ ▼ ▼ Adaptec SCSI Card 39160
Ultra160 SCSI Controller
User’s Reference
iii
▼ ▼ ▼ ▼ Contents
Overview 1
Ultra160 SCSI on the Adaptec SCSI Card 39160 1
Understanding SCSI 2
SCSI IDs 3
Terminating the SCSI Bus 4
Troubleshooting 5
Troubleshooting Checklist 5
Troubleshooting in Windows 95/98 6
Common Error Messages 10
Using the Adaptec SCSI Card 39160 and SCSI
Devices 11
Using SCSI Devices 11
Using SCSI Hard Disk Drives 11
Using Ultra160 Hard Disk Drives 12
Using Scanners 12
Combining SCSI and Non-SCSI Devices 13
Installing Multiple SCSI Cards 14
Connecting the LED Connector 14
Overriding SCSI Termination Settings 15
Configuring the Adaptec SCSI Card 39160 with
SCSI
Select
16
Starting SCSISelect 18
Exiting SCSISelect 18
Using SCSISelect Settings 19
SCSI Bus Interface Definitions 19
Boot Device Options 19
SCSI Device Configuration Options 20
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Adaptec SCSI Card 39160 User’s Reference
Advanced Configuration Options 21
Using SCSI Disk Utilities 24
Connecting SCSI Devices 25
Maximum Cable Lengths 26
1
Overview
Ultra160 SCSI on the Adaptec SCSI Card 39160
The Adaptec SCSI Card 39160 enables you to connect up to 30 SCSI
devices—such as very large arrays of high-performance HDDs,
external storage subsystems, clustered configurations, Ultra160 hard
disk drives, scanners, and CD-ROM drives—to any Intel-based com-
puter with 64- or 32-bit PCI expansion slots. Ultra160 is a new gener-
ation of SCSI technology that increases SCSI performance from
80 MBytes/sec to 160 MBytes/sec. In addition to providing much
greater performance, Ultra160 SCSI enables a maximum allowable
cable length of 12 meters for optimal connectivity and flexibility.1
The Adaptec SCSI Card 39160 has two independent SCSI channels,
each with a maximum throughput of 160 MBytes/sec.
■SCSI Channel A (marked “CH 1/A” on the card) has two
internal connectors and one external connector.
■SCSI Channel B (marked “CH 2/B” on the card) has one inter-
nal connector and one external connector.
For the best data I/O performance, connect only LVD (Low Voltage
Differential) devices and LVD cables to the Adaptec SCSI Card
39160. (LVD devices means Ultra160 and Ultra2 SCSI devices.) If you
connect non-LVD devices (for example, Fast SCSI or Ultra SCSI
devices), we recommend that you connect them to SCSI Channel A.
This allows you to operate Ultra160 and Ultra2 devices at their max-
1 WhenonlyoneUltra2orUltra160SCSIdeviceisconnected, thecablelength
can be up to 25 meters (82 feet).
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Adaptec SCSI Card 39160 User’s Reference
imum speed on Channel B while at the same time using non-LVD
SCSI devices on Channel A.
Although the Adaptec SCSI Card 39160 is a 64-bit PCI 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 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 39160 settings.
Note:
Read the Adaptec SCSI Card 39160 Installation Guide if
you need instructions on installing the SCSI Card and con-
necting SCSI devices to it.
Understanding SCSI
SCSI (pronounced “scuzzy”) stands for Small Computer Systems
Interface. SCSI is an industry standard computer interface for con-
necting 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 39160) installed in a computer
and one or more SCSI devices. SCSI cables are used to connect the
devices to the SCSI adapter card. The Adaptec SCSI Card 39160 has
two independent SCSI buses (channels).
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.
3
Overview
SCSI IDs
Each device attached to the Adaptec SCSI Card 39160, as well as the
Adaptec SCSI Card 39160 itself, must be assigned a unique SCSI ID
number from 0 to 15 for each of the two SCSI buses. A SCSI ID
uniquely identifies each SCSI device on the SCSIbus 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 do not need to be sequential, as long as the
Adaptec SCSI Card 39160 and each device has a different num-
ber. For example, on each of the two SCSI buses 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, then 15 to 8.
■On both SCSI buses (channels) the Adaptec SCSI Card 39160 is
preset to SCSI ID 7 and should not be changed. This gives the
card 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.
■If you are booting your computer from a SCSI hard disk drive
connected to the Adaptec SCSI Card 39160, the Boot SCSI 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.
■In Windows®95/98, you can use the Device Manager to deter-
mine which SCSI ID is assigned to each installed SCSI device.
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Adaptec SCSI Card 39160 User’s Reference
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 these internal devices is provided by the built-
in terminator at the end of the 68-pin internal LVD SCSI cable.
■Termination on Wide SCSI, Narrow SCSI, and Ultra 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 most external SCSI devices is controlled by
installing or removing a SCSI terminator. However, termina-
tion on some external SCSI devices is enabled or disabled by
setting a switch on the back of the SCSI device.
■By default, termination on the Adaptec SCSI Card 39160 itself
is set to Automatic (the preferred method). We recommend that
you do not change this default setting.
Dieses Handbuch passt für folgende Modelle
2
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