
Installation and Operation Manual
ATTO ExpressPCI UL4S
Single Channel Ultra320 SCSI, PCI-X Host Adapter
ATTO ExpressPCI UL4D
Dual Channel Ultra320 SCSI, PCI-X Host Adapter
ATTO ExpressPCI UL5D
Dual Channel Ultra320 SCSI, PCI Express Host Adapter
ATTO ExpressPCI UL5D LP
Dual Channel Ultra320 SCSI, Low-Profile PCIe Host Adapter
© 2006 ATTO Technology, Inc. All rights reserved. All brand or product names are trademarks of their
respective holders. No part of this manual may be reproduced in any form or by any means without the
express written permission of ATTO Technology, Inc.
9/2006 Document Control Number: PRMA-0325-000MD

Contents
1 SCSI is a key technology for storage 1
SCSI advantages
Glossary
2 ATTO ExpressPCI Ultra320 SCSI solutions 3
Ultra 320 SCSI features
Common features
UL4D, UL4S specific features
UL4D specific features
UL4S specific features
UL5D, UL5D LP specific features
UL5D specific features
UL5D LP specific features
SCSI host adapter selection guide
3 Hardware installation 5
System requirements
Installation
3.1 Cabling and termination ......................................................7
Setting up cables and termination
4 Installing drivers 9
5 Updating hardware flash 10
Use the ATTO Configuration Tool
Use the ExpressPCI BIOS Setup Utility
Appendix A Standards and compliances ............................................i
Appendix B ATTO product guide .........................................................ii
SCSI adapter selection guide
Celerity FC storage adapter selection guide
Appendix C Contact ATTO Technology, Inc. ......................................iv
ATTO Technology Inc.

1 SCSI is a key technology for storage
Ultra320 SCSI represents the seventh generation of SCSI technology, an I/O interface that increases
performance while maintaining backward compatibility and legacy support.
From its roots in 5 MB/sec. transfer rates, SCSI
has evolved as the leading interface for disk drive
connections in high performance servers. It
features maximum data transfer rates of 320
MB/second, full backward compatibility with
older versions of SCSI protocols and additional
features to improve performance and reliability.
Ultra320 is a powerful storage technology. All
forms of digital content, from e-mail, video, film,
and audio, to streaming video, and imaging, are
Exhibit 1-1 How SCSI has evolved.
Narrow
Data transfer
rates
SCSI protocol SCSI-1 SCSI-2 SCSI-3 SCSI-3 SCSI-3 SCSI-3 SCSI-3
Specification SPI-1 SPI-1 SPI-1 SPI-1 SPI-2 SPI-3 SPI-4
Transfer type Single-
<5 MB/sec 10 MB/sec 20 MB/sec 40 MB/sec 80 MB/sec 160 MB/sec 320 MB/sec
Ended
Fast/
Narrow
Single-
Ended HVD
Ultra Ultra/WIDE Ultra2 Ultra160 Ultra320
Single-
Ended HVD
driving the unprecedented growth in storage that
pushes the I/O bandwidth, requiring more
advanced interfaces to handle data transfer.
SCSI advantages
• Backward compatible with older versions of
SCSI. Newer adapters will negotiate to the
lower speeds of legacy devices.
• Minimal investment to upgrade technology.
Older equipment may still be used with newer
equipment. Upgrade does not require
replacement of infrastructure.
Single-
Ended HVD
LVD LVD LVD
Glossary
Some terms used in the storage industry are defined below. More information is available through the
ATTO Technology website (
Term Definition
ANSI American National Standards Institute
Asynchronous
Information
Protection
bit Smallest unit of data a computer can process: a single binary digit with a value of either 0 or 1
byte an ordered set of 8 bits
CRC Cyclic Redundancy Checking, an error-correcting code which calculates a numeric value for
destination address A value in the frame header of each frame which identifies the port in the node where the
domain validation Before sending data, domain validation verifies that the physical connection is capable of
www.attotech.com
AIP: although most Ultra320traffic is sent synchronously and protected by CRC, some
information is still sent asynchronously. AIP implements CRC-level error checking on
asynchronous traffic ensuring end-to-end data integrity.
received and transmitted data. If no error has occurred during transmission, the CRC for both
received and transmitted data should be the same.
frame is being sent
handling the negotiated transfer speed. If the system determines that Ultra320speeds are not
feasible, a slower speed is enforced.
) and the SCSI Trade Association (
www.scsita.org
).
1
ATTO Technology Inc. ExpressPCI Host Adapter Installation and Operation Manual