Adaptec 2930U2 - Storage Controller Ultra2 SCSI 80... Manuale di servizio
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USER’S
REFERENCE
SCSI CARD 2930U2
© 1998 Adaptec, Inc.
All rights reserved. Adaptec, and the Adaptec logo
are trademarks of Adaptec, Inc. which may be regis-
tered in some jurisdictions.
Printed in Singapore
STOCK NO.: 512191-00, Rev. A RQ 11/98
R
Adaptec, Inc.
691 South Milpitas Boulevard
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▼ ▼ ▼ ▼ SCSI Card 2930U2
User’s Reference
iii
▼ ▼ ▼ ▼ Contents
Understanding SCSI 1
SCSI IDs 1
Terminating the SCSI Bus 3
Troubleshooting 4
Troubleshooting Checklist 4
Troubleshooting in Windows 95 and Windows 98 5
Common Error Messages 9
Using the SCSI Card 2930U2 and SCSI
Peripherals 10
Using SCSI Peripherals 10
Hard Disk Drives 10
Scanners 11
SCSI Peripheral Display at Bootup 12
Installing Multiple SCSI Cards 12
Connecting the LED Connector 13
Using SCSI and IDE (or EIDE) Peripherals 14
Replacing a Non-Adaptec SCSI Card with an Adaptec SCSI
Card 14
Configuring the SCSI Card 2930U2 with
SCSI
Select
15
Starting SCSISelect 16
Exiting SCSISelect 17
Using SCSISelect Settings 17
Basic Host Adapter Settings 17
Boot Device Options 18
SCSI Device Configuration 19
Advanced Configuration Options 20
Using SCSI Disk Utilities 22
iv
SCSI Card 2930U2 User’s Reference
SCSI Cables and Adapters 23
External Cables 23
External Connector Diagrams 23
Internal Cables 24
Internal Connector Diagrams 24
Cabling Examples 25
Maximum Cable Lengths 27
❒
1
Understanding SCSI
SCSI (pronounced “scuzzy”) stands for Small Computer Systems
Interface. SCSI is an industry standard computer interface for con-
necting SCSI peripherals (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 SCSI Card 2930U2) installed in a computer and one
or more SCSI peripherals. SCSI cables are used to connect the
peripherals to the SCSI adapter card.
For the SCSI bus to function properly, SCSI IDs must be assigned to
SCSI devices (SCSI peripherals and SCSI card), and the SCSI bus
must be properly terminated.
SCSI IDs
Each peripheral attached to the SCSI Card 2930U2, as well as the
SCSI Card 2930U2 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 try-
ing to use the SCSI bus at the same time.
Refer to the peripheral’s documentation to set the SCSI ID. Here are
some general guidelines for SCSI IDs:
■For internal SCSI peripherals, the SCSI ID usually is set by
configuring a jumper on the peripheral.
■For external SCSI peripherals, the SCSI ID usually is set with a
switch on the back of the peripheral.
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SCSI Card 2930U2 User’s Reference
■SCSI ID numbers don’t have to be sequential, as long as the
SCSI Card 2930U2 and each peripheral has a different number.
For example, you can have an internal SCSI peripheral with ID
0, and an external SCSI peripheral 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 SCSI Card 2930U2 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 peripherals, 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 SCSI Card 2930U2, the Boot Target ID setting
in the SCSISelect®utility must correspond to the SCSI ID of the
peripheral from which you are booting. By default, the Boot
Target ID is set to 0. See Boot Device Options on page 18 to
change the Boot Target ID.
■In Windows®95 and Windows 98, you can use the Device
Manager to view the SCSI ID (and other details) assigned to
each SCSI device installed.
■If you installed Adaptec®EZ-SCSI®software, you can use the
SCSI Explorer utility to view the SCSI ID (and other details)
assigned to each SCSI device installed.
3
Understanding SCSI
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 peripheral at the end of each cable, or the end of the cable itself,
has a terminator installed (or enabled). The peripherals between the
ends of each cable must have its terminator removed (or disabled).
Since the method for terminating a SCSI peripheral can vary widely,
refer to the peripheral’s documentation for instructions on how to
enable or disable termination. Here are some general guidelines for
termination:
■Termination on internal SCSI peripherals usually is controlled
by manually setting a jumper or a switch on the peripheral, or
by physically removing or installing one or more resistor mod-
ules on the peripheral.
■Termination on external SCSI peripherals usually is controlled
by installing or removing a SCSI terminator. On some external
peripherals, termination is controlled by setting a switch on the
back of the drive.
■By default, termination on the SCSI Card 2930U2 itself is auto-
matic (the preferred method). To manually set termination on
the SCSI Card 2930U2, see Configuring the SCSI Card 2930U2
with SCSISelect on page 15.
■Internal Ultra2 peripherals (such as low voltage differential
(LVD) hard disk drives) are set at the factory with termination
disabled and cannot be changed. Proper termination for inter-
nal Ultra2 peripherals is provided by the built-in terminator at
the end of the Ultra2 internal SCSI cable.
■Most non Ultra2 SCSI peripherals come from the factory with
termination enabled.
4
SCSI Card 2930U2 User’s Reference
Troubleshooting
Most problems can be resolved by following the recommendations
in Troubleshooting Checklist below. If you still experience problems
after following the recommendations, continue with the remainder
of this section.
Troubleshooting Checklist
Most problems with using the SCSI Card 2930U2 result from errors
in preparing and connecting peripherals on the SCSI bus. If you
have problems, check these items first.
Note:
If you have problems with a specific SCSI peripheral
when other connected SCSI peripherals are working cor-
rectly, please contact the manufacturer of the problem
peripheral for troubleshooting information.
■Are all SCSI peripherals turned on?
■Are all SCSI cables and power cables properly connected?
■Is the SCSI Card 2930U2 firmly seated and secured in the PCI
expansion slot?
■Is the PCI expansion slot PCI Rev. 2.1 or higher compliant and
does it support Bus Mastering?
■Are all SCSI peripherals and the SCSI Card 2930U2 assigned
unique SCSI IDs? (See Setting Up SCSI Peripherals on page 3.)
■Are all SCSI peripherals terminated properly? (See Setting Up
SCSI Peripherals on page 3.)
■If your computer allows you to set up configuration options
when the computer first boots up (that is, through CMOS
setup), are the following options set up as specified?
■If there is an Interrupt Type or Interrupt Line option in the
Setup program, select Int-A or Interrupt Type = A (you may
also be required to change a motherboard jumper setting).
■If there is a Triggering Interrupt option, select Level.
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