Adaptec 2930U2 - Storage Controller Ultra2 SCSI 80... Service manual

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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
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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

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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.

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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.

5
Troubleshooting
■If there is an option to enable or disable bus mastering for
the PCI slots, select enable.
■If there is an option to enable or disable individual PCI
slots, be sure the slot in which you install the SCSI Card
2930U2 is enabled.
■If your computer has a combination of ISA (or EISA)
boards and PCI boards, you may need to mark the IRQs
used by ISA/EISA boards as Used so the computer BIOS
will not try to assign these IRQs to other PCI boards.
■In some computers the BIOS reserves a set of available
IRQs for PCI boards, and you have to assign these IRQs
manually.
Note: Some configuration options apply to a specific PCI bus
slot, so if you change any option be sure you are applying
the change to the correct slot. Check your computer docu-
mentation to determine the correct PCI bus slot.
Troubleshooting in Windows 95 and Windows 98
When I start Windows 95, the system locks up when the Windows logo
is displayed. How can I get the system to start so that I can verify that
the SCSI card is functioning normally?
1
Start or restart your computer. View the messages that appear
onscreen.
2
When the message “Starting Windows 95” appears, press and
release the F8 function key while the text is on your screen.
3
From the menu that is displayed, select Safe Mode. (It may
take several minutes for Windows 95 to load.)
4
If the system completes the boot to the desktop, the core soft-
ware is functional; resources, software conflicts and/or hard-
ware need to be checked.
5
If the system still fails to boot, and the boot drive is on an exist-
ing IDE or SCSI controller, shut down the system, remove the
SCSI Card 2930U2, and restart the computer.

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SCSI Card 2930U2 User’s Reference
6 Verify an IRQ is available by viewing resources in System
Properties.
7 Verify the Operating System is set to Optimal Performance by
checking the Performance tab under System Properties.
How can I tell if the SCSI Card 2930U2 software driver is loading
properly?
1 Click the Start button, point to Settings, then click Control
Panel.
2 Double-click the System icon.
3 Click the Device Manager tab.
4 Double-click the SCSI Controller icon. The software driver for
the SCSI Card 2930U2 is listed as “Adaptec AHA-2930U2 PCI
Ultra2 SCSI Controller.”
■If the driver is listed, the SCSI Card 2930U2 driver is load-
ing properly.
■If the driver is listed but has an exclamation mark inside a
yellow circle, the software driver may be in conflict with
other hardware using the same resources. Double-click the
icon to see the device status and possible solutions.
■If the driver is listed but has an “X” inside a red circle, the
SCSI Card 2930U2 software driver is disabled and isn’t
loading (see below).
■If the SCSI Controller icon or the SCSI Card 2930U2 soft-
ware driver is not listed, reinstall the driver (see below).
Note:
Software upgrades (including downloadable drivers)
for Adaptec products are available on the Adaptec Web Site
at http://www.adaptec.com .

7
Troubleshooting
An “X” inside a red circle appears with the SCSI Card 2930U2 software
driver in Device Manager. What does this mean?
The SCSI Card 2930U2 software driver is disabled and isn’t loading.
To enable the driver:
1 Double-click the SCSI Card 2930U2 software driver in Device
Manager.
2 Under the General tab, check the Original Configuration (cur-
rent) box.
What if there is no SCSI controller icon under Device Manager, or the
software driver for the SCSI Card 2930U2 does not appear under
Device Manager?
If the SCSI controllers icon or the software driver do not appear:
1 Double-click the Add New Hardware icon in Control Panel.
2 Select Yes on the second screen of the Add New Hardware
Wizard to have Windows search for the SCSI Card 2930U2.
3 Follow the onscreen instructions.
If Windows 95 does not detect the SCSI Card 2930U2, run the Add
New Hardware Wizard again:
1 Double-click the Add New Hardware icon in Control Panel.
2 Select No on the second screen of the wizard.
3 Select SCSI controllers on the next screen.
4 Select “Adaptec AHA-2930U2 PCI Ultra2 SCSI Controller.”
If “Adaptec AHA-2930U2 PCI Ultra2 SCSI Controller” is not on the
list, you may be able to install the driver from the Adaptec EZ-SCSI
Setup Diskette. Follow these steps:
1 Place the Adaptec EZ-SCSI Setup Diskette in the floppy disk
drive.
2 Double-click the Add New Hardware icon in Control Panel.
3 Select No on the second screen of the wizard.
4 Select SCSI controllers on the next screen.
5 Click the Have Disk button, then click the Browse button.

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SCSI Card 2930U2 User’s Reference
6 Look in the \drivers\storage directory of the Windows 95
CD-ROM (or the root directory of the EZ-SCSI Setup Diskette)
and select the model of your SCSI card.
How can I check the status of a resource (for example, IRQ,
Memory, I/O)?
1 Click the Start button, point to Settings, then click Control
Panel.
2 Double-click the System icon.
3 Click the Device Manager tab.
4 Double-click the Computer icon.
5 On the View Resources tab, click the option button for the type
of resource you want to check.
6 The setting and the hardware using the setting are displayed.
■If a specific resource is not listed, the resource is not used
by a device.
■If a resource is listed more than once, the resource is used
by more than one device.
■If a resource is used by an unknown device, the resource is
used but the device using the resource cannot be detected.
How do I use the Hardware Conflict Troubleshooter in Windows 95 and
Windows 98?
1 Click the Start button, then click Help.
2 From the Contents tab, double-click Troubleshooting.
3 Double-click If you have a hardware conflict.
4 Follow the step-by-step instructions in the Windows Help
window.

9
Troubleshooting
Common Error Messages
The following messages may appear at bootup:
“Device connected, but not ready”
The host received no answer when it requested data from an
installed SCSI peripheral.
■Run SCSISelect and set the Send Start Unit Command to Yes for
the particular SCSI peripheral ID.
■Make sure the peripheral is set to spin up when the power is
switched on. The spin up option is typically set by a jumper.
(See the documentation for the peripheral.)
“Start unit request failed”
The SCSI Card BIOS was unable to send a Start Unit Command to
the peripheral.
■Run SCSISelect and disable the Send Start Unit Command for
the peripheral.
“Time-out failure during...”
An unexpected time-out occurred.
■Verify the SCSI bus is properly terminated.
■Verify all cables are properly connected.
■Try disconnecting the SCSI peripheral cables from the SCSI
card and then starting the computer. If the computer
successfully restarts, one of the SCSI peripherals may be
defective.

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SCSI Card 2930U2 User’s Reference
Using the SCSI Card 2930U2
and SCSI Peripherals
This section provides useful information on using the SCSI Card
2930U2 and your SCSI peripherals. For specific information, refer to
the SCSI peripheral documentation.
Using SCSI Peripherals
Hard Disk Drives
■Every SCSI hard disk drive must be physically low-level for-
matted, partitioned, and logically formatted before it can be
used to store data. SCSI hard disks are physically low-level for-
matted at the factory and do not usually need to be formatted
again.
If you connect a new SCSI hard disk drive to your SCSI card,
you must partition and logically format the drive. For DOS
and Windows (3.x, 95, and 98) use the DOS Fdisk and Format
commands (see your computer, DOS, and Windows documen-
tation). For Windows NT, see your operating system
documentation.
■If you are booting from a SCSI hard disk drive, make sure the
Hard Disk (or Drives) setting in your computer’s CMOS setup
program is set to None or No Drives Installed, as is required
for SCSI hard disk drives. See your computer documentation
for details.
■If both SCSI and non-SCSI (for example, IDE) disk drives are
installed, then the non-SCSI disk drive is typically the boot
drive. If your computer supports BBS (BIOS Boot Specifica-
tion), both SCSI and non-SCSI disk drives can coexist and you
can specify which drive to boot from. Refer to your computer
documentation for more information.

11
Using the SCSI Card 2930U2 and SCSI Peripherals
Ultra2 (LVD) Hard Disk Drives
■We recommend keeping your Ultra2 hard disk drives separate
from your non Ultra2 peripherals. Connecting a non Ultra2
hard disk drive to the Ultra2 connector on the SCSI Card
2930U2 causes the Ultra2 SCSI segment of the SCSI bus to drop
down to Ultra SCSI performance levels (40 MBytes/sec).
■Do not connect your Ultra2 hard disk drives to connectors
other than the Ultra2 connector on the SCSI Card 2930U2.
■Internal Ultra2 SCSI peripherals come from the factory with
termination disabled and cannot be changed. Proper termina-
tion is provided by the built-in terminator at the end of the
Ultra2 internal SCSI cable provided in the kit.
Scanners
■You will need to install the scanner manufacturer’s proprietary
software drivers. See your scanner’s documentation for
details.
Ultra2 Internal Connector
Figure 1. Ultra2 Internal Connector

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SCSI Card 2930U2 User’s Reference
SCSI Peripheral Display at Bootup
At bootup, each peripheral attached to the SCSI Card 2930U2 is
identified by SCSI ID, name, and the mode (Ultra2-LVD or Ultra-SE)
in which it is running. For example, a message similar to the follow-
ing appears on the screen at bootup:
SCSI ID:0 Seagate ST39173LC Ultra2-LVD
In this example, the peripheral is assigned SCSI ID 0; “Seagate
ST39173LC” refers to the name of the peripheral; “Ultra2-LVD”
means that the peripheral is running in Ultra2-LVD mode.
LVD (Low Voltage Differential) is the enabling technology for
Ultra2. If the peripheral is running in Ultra2-LVD mode, this indi-
cates that the peripheral’s maximum transfer rate is set at the Ultra2
SCSI performance level (80 MBytes/sec). SE (Single-Ended) is the
enabling technology for Fast SCSI and Ultra SCSI. If the peripheral is
running in Ultra2-SE mode, this indicates that the peripheral’s maxi-
mum transfer rate is set at the Ultra SCSI performance level (40
MBytes/sec).
Note:
If any peripheral is attached to the Ultra2 SCSI
segment and is running in SE mode, one or more Wide Ultra
or Ultra peripherals is attached to the Ultra2 segment and is
causing the Ultra2 segment to run at speeds up to
40 MBytes/sec instead of 80 MBytes/sec.
Installing Multiple SCSI Cards
■You can install multiple SCSI cards in your computer; you are
limited only by the available system resources (for example,
IRQ settings, I/O port addresses, BIOS addresses, and so
forth).
■Each SCSI card you install forms a separate SCSI bus with a
different set of SCSI peripherals. SCSI IDs can be reused as
long as the ID is assigned to a peripheral on a different SCSI
card (for example, each SCSI card can have a peripheral with
SCSI ID 2).
■If you have two or more SCSI cards, enable the BIOS on the boot
SCSI card only. Disable the BIOS on the remaining SCSI cards.

13
Using the SCSI Card 2930U2 and SCSI Peripherals
Connecting the LED Connector
(Optional feature) Most computers have an LED disk activity light on
the front panel. If you choose to disconnect the cable from the LED
connector on the motherboard and connect it to the LED connector
on the SCSI card, the LED on the front panel of the computer will
light whenever there is activity on the SCSI bus (see Figure 2).
Note:
If you are using non-SCSI disk drives (for example,
IDE), you may not want to connect your computer’s LED to
the SCSI card, since the LED will no longer indicate non-
SCSI disk activity.
LED Connector
on SCSI Card
1
LED Cable
from
Motherboard
Pin 1
1
2-pin
LED
Cable
Figure 2. Connecting the LED Cable to the LED Connector

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SCSI Card 2930U2 User’s Reference
Using SCSI and IDE (or EIDE) Peripherals
■All Adaptec SCSI cards can coexist with another controller
(IDE, EIDE, RLL, etc.) installed in the computer.
■If you have both an IDE hard disk drive and a SCSI hard disk
drive, the IDE drive is typically the boot drive. In this case, dis-
able the BIOS on the SCSI card (see Advanced Configuration
Options on page 20). If your computer supports BBS (BIOS Boot
Specification), both SCSI and non-SCSI disk drives can coexist
and you can specify which drive to boot from. Refer to your
computer documentation for more information.
■You cannot connect an IDE peripheral to a SCSI card, or a SCSI
peripheral to an IDE card (controller).
■Disable the BIOS on the SCSI card if no SCSI hard disk drives
are installed (see Advanced Configuration Options on page 20).
Replacing a Non-Adaptec SCSI Card with an
Adaptec SCSI Card
■SCSI is standard, but how data is translated onto a hard disk
drive is not. Each SCSI card manufacturer uses its own transla-
tion schemes for writing data to a disk. To use a hard disk drive
previously connected to a non-Adaptec SCSI card, low-level
format the drive after connecting to the Adaptec SCSI card.
(See Using SCSI Disk Utilities on page 22.)
Caution:
A low-level format destroys all data on the drive.
Be sure to back up your data before performing a low-level
format.