Adaptec 39320-R User manual

INSTALLATION GUIDE
ADAPTEC SCSI CARD 39320
ASC-39320 IG.fm Page 14 Monday, August 12, 2002 9:36 AM

1
The Adaptec SCSI Card 39320 enables you to connect up to 30
SCSI devices—such as very large arrays of high-performance
hard disk drives, external storage subsystems, Ultra320/160 hard
disk drives, scanners, and CD-ROM drives—to any Intel-based
computer with 64- or 32-bit PCI/PCI-X expansion slots.
The Adaptec SCSI Card 39320 has two independent SCSI
channels with a maximum throughput of 320 MB/sec. SCSI
Channel A (marked CH A on the card) has one internal
68-pin Low Voltage Differential/Single-Ended (LVD/SE)
connector. SCSI Channel B (marked CH B on the card) has one
internal 68-pin LVD/SE connector and one external 68-pin
LVD/SE connector.
You can connect Ultra320/160 and Ultra2 SCSI devices to the
68-pin LVD connectors on both SCSI channels. When connecting
these newer devices along with older legacy SCSI devices,
Adaptec recommends that you dedicate them as separate
channels. See Support for Older SCSI Devices on page 2 for more
information.
Although the Adaptec SCSI Card 39320 is a 64-bit PCI/PCI-X
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 installation guide explains how to:
•Install the Adaptec SCSI Card 39320
•Set up SCSI devices
•Connect SCSI devices
INTRODUCTION
68-pin external
LVD/SE connector
Channel B
68-pin internal LVD/SE
connector Channel B 68-pin internal LVD/SE
connector Channel A
ASC-39320 IG.fm Page 1 Monday, August 12, 2002 9:36 AM

2
Support for Older SCSI Devices
If you have single-ended Ultra SCSI and earlier SCSI devices,
Adaptec recommends that you connect them together on one
channel of the Adaptec SCSI Card 39320 and that you connect
newer Ultra320/160 SCSI and Ultra2 devices to the other
channel. This allows the Adaptec SCSI Card 39320 to dedicate
one SCSI channel to support a slower transfer rate for the Ultra
(legacy) devices, while the second SCSI channel can support LVD
devices in Ultra320, Ultra 160, or Ultra2 speeds. It also allows you
to use longer cable lengths for the newer SCSI devices.
Discharge any static electricity build-up before handling your
SCSI card by touching a grounded metal object (like the exposed
metal parts on the back of your computer).
If you connect Wide Ultra/Ultra SCSI devices to the
same SCSI channel as Ultra320/160 and Ultra2 SCSI devices,
the data transfer rate for the Ultra320/160 and Ultra2 SCSI
devices will drop to Ultra SCSI performance levels. To achieve
maximum data transfer rates for the newer SCSI devices, be
sure to connect them on their own SCSI channel.
NOTE
INSTALLING THE ADAPTEC SCSI CARD 39320
STEP 1
Turn OFF power to the computer and disconnect the
power cord.
WARNING
ASC-39320 IG.fm Page 2 Monday, August 12, 2002 9:36 AM

3
After you turn off your computer and unplug the power cord,
remove the cover from the computer.
Locate an unused 64-bit PCI/PCI-X expansion slot and remove
the expansion slot cover. If the computer does not have a 64-bit
slot, you can install the card in a 32-bit PCI slot. The Adaptec
SCSI Card 39320 supports both 5V and 3.3V 64-bit slots. (The
expansion slot must be compliant with PCI Rev. 2.1 or PCI-X
Rev. 1.0 and must support Bus Mastering.) Save the slot cover
screw for use in Step 4.
Computers may have vertical or horizontal expansion slots. Refer
to your computer manual to locate the PCI slots. If your
computer is a tower model, lay it on its side to allow for easier
installation of the Adaptec SCSI Card 39320.
STEP 2
STEP 3
Be careful when inserting the Adaptec SCSI Card
39320 in a PCI slot. Some 32-bit slots will not accommodate it,
and the card may break if you force it into the slot.
Slot cover
screw
Expansion
slot cover 64-bit PCI slot
32-bit PCI slot
WARNING
ASC-39320 IG.fm Page 3 Monday, August 12, 2002 9:36 AM

4
Insert the Adaptec SCSI Card 39320 in the 64-bit (or 32-bit) PCI or
PCI-X expansion slot; press down firmly until the card clicks into
place, then replace the slot cover screw. When installed properly,
the card should appear level with the expansion slot, as shown
below.
There are several things you may need to do to your SCSI devices
before you connect them to the Adaptec SCSI Card 39320:
•Check the SCSI IDs
•Set the termination
•Connect the power cables
Since setup can vary from device to device, always refer to the
device’s documentation for specific instructions.
Below are some guidelines for setting SCSI IDs and termination
on your devices.
Check the SCSI IDs
The Adaptec SCSI Card 39320 and each device you connect to it
must have a unique SCSI ID number ranging from 0 to 15 on each
channel. No two devices on the same SCSI channel can have the
same SCSI ID.
STEP 4
SETTING UPSCSI DEVICES
ASC-39320 IG.fm Page 4 Monday, August 12, 2002 9:36 AM

5
The Adaptec SCSI Card 39320 is preset to ID 7 for each channel
and should not be changed. If you boot from a SCSI hard disk,
make sure the hard disk SCSI ID is set to 0. (Most SCSI hard disks
are preset to SCSI ID 0 at the factory.) The SCSI IDs for internal
devices are usually set with jumpers; SCSI IDs for external
devices are usually set with a switch on the back of the device.
Terminate the Ends
To ensure reliable communication on the SCSI bus, the device at
the end of each cable, or the end of the cable itself, must have a
terminator installed (or enabled). Terminators must be removed,
or termination must be disabled, on devices between the ends of
each cable.
You can connect a total of 30 SCSI devices to the Adaptec SCSI
Card 39320,with up to 15 devices on each SCSI channel. Before
connecting devices, be sure to review Setting Up SCSI Devices on
page 4.
Connecting Internal Ultra320/160 and Ultra2 Devices
A special 68-pin internal LVD cable is needed to connect internal
Ultra320/160 or Ultra2 SCSI devices. If your cables are not
marked, you can identify most LVD cables as having twisted
pairs ofthe flat ribbon cable between the device connectors. Some
cables are laminated so that they lay flat. Internal LVD cables
usually have a terminator built into the end of the cable.
When connecting Ultra320/160 or Ultra2 SCSI devices,
the SCSI bus must be terminated either on the end of the cable
(with a permanent terminator) or with a separate terminating
connector. Ultra SCSI and earlier single-ended devices can
terminate the bus directly from the device. If you use an Ultra
SCSI terminator on an LVD Ultra320/160 and Ultra2 SCSI bus,
the SCSI devices will not operate properly. For this reason be
sure that you have the necessary Ultra320/160 or Ultra2 cable
and terminator before installing the Ultra320/160 SCSI
devices.
NOTE
CONNECTING SCSI DEVICES
ASC-39320 IG.fm Page 5 Monday, August 12, 2002 9:36 AM

6
The Adaptec SCSI Card 39320 has two separate Ultra320/160
SCSI channels, as shown in the figure on page 1. Both channels
have an internal LVD/SE connector to which you can connect
internal SCSI devices.
Follow these steps to connect your internal Ultra320/160 and
Ultra2 devices:
Locate a 68-pin internal LVD SCSI cable, which may have either
twisted wires or flat wires, as shown here.
Adaptec recommends that you keep your Ultra320/160
and Ultra2 SCSI devices on a separate SCSI channel from your
Ultra SCSI devices. This allows the newer Ultra320/160 and
Ultra2 SCSI devices to transfer data at their maximum speed.
NOTE
STEP 1
Terminated end Nonterminated end
ASC-39320 IG.fm Page 6 Monday, August 12, 2002 9:36 AM

7
Plug the nonterminated end of the cable(s) to one of the internal
LVD/SE connector.
Plug the internal Ultra320/160 and Ultra2 SCSI devices to the
other cable connectors, starting with the connector at the
terminated end of the cable.
Connect a power cable from your computer’s internal power
supply to each internal SCSI device.
STEP 2
STEP 3
Internal Ultra320/160 and Ultra2 SCSI devices come
from the factory with termination disabled and cannot be
changed. Proper termination is provided by the terminator at
the end of the LVD SCSI cable.
Ultra320/160 or Ultra2
SCSI devices
Built-in terminator on cable
Plug first device
to this connector
NOTE
STEP 4
ASC-39320 IG.fm Page 7 Monday, August 12, 2002 9:36 AM

8
Connecting External SCSI Devices
You can connect external Ultra320/160 and Ultra2 SCSI devices
to the 68-pin external LVD/SE SCSI connector. Each external
device will require a 68-pin external LVD SCSI cable.
Follow these steps to connect your external SCSI devices:
Connect one end of an external SCSI cable to the external
Ultra320/160 connector on the Adaptec SCSI Card 39320.
Connect the other end of the cable to a SCSI connector on the
back of an external device. If you are installing only one external
device, terminate the device and skip to Step 4.
We recommend that you do not combine older SCSI
devices with the newer Ultra320/160 and Ultra2 SCSI devices
on the same SCSI channel of the Adaptec SCSI Card 39320.
NOTE
STEP 1
68-pin external
LVD/SE SCSI
connector (Ch B)
External LVDSCSI
cable
STEP 2
4
4
SCSI terminator
ASC-39320 IG.fm Page 8 Monday, August 12, 2002 9:36 AM

9
Connect the other external SCSI devices by linking each device to
the previous one, as shown below. Terminate only the device at
the end of the chain.
Connect power cables to all external device(s) and to the
computer.
The last SCSI device on the end of each SCSI bus cable must be
terminated, and termination must be disabled for all other devices
in the middle of the cables. Ultra320/160 and Ultra2 SCSI devices
are automatically unterminated, but Ultra SCSI and Fast/Wide
SCSI devices do have termination that you must check. For more
information, refer to the documentation for each SCSI device.
If you are using external Ultra2 or Ultra320/160 devices, be sure
to use anLVD terminator to terminate the last device in the chain.
If you use a single-ended, active terminator (sometimes called an
Ultra terminator) the SCSI devices will not operate properly.
STEP 3
Terminated SCSI device
STEP 4
MORE INFORMATION ABOUT TERMINATION
ASC-39320 IG.fm Page 9 Monday, August 12, 2002 9:36 AM