ATTO Technology UL4D PCI, UL4S PCI, UL5D PCI Installation And Operation Manual
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
© 2007 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.
7/2007 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 Host Adapter specific features
UL4S Host Adapter specific features
UL5D, UL5D LP Host Adapter specific features
UL5D Host Adapter specific features
UL5D LP Host Adapter 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
FCC standards: radio and television interference
Canadian standards
European standards
Declaration of Conformity
Appendix B ATTO product guide .........................................................ii
SCSI adapter selection guide
SAS selection guide
Celerity FC adapter selection guide
Appendix C Safety, warranty, contacts ...............................................v
Safety
Installation
Operation
ATTO Technology, Inc. limited warranty
Contact ATTO Technology, Inc.
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
Term Definition
double transition
clocking
flow control The target indicates to the initiator when the last packet of a data stream will be transferred so
host A processor, usually a CPU and memory, which communicates with devices over an interface
HVD High voltage differential: uses two wires, transmitting a signal on one and its inverse on the
initiator device A component which originates a command
LED Light-emitting diode: a type of diode that emits light when current passes through it. Visible
LVD Low voltage differential. SCSI signalling method that combines the benefits of HVD and
originator An initiating device; a component which originates a command
packetization Creates information units (IUs) from commands, data, status information, etc. which are
pre-compensation Although SCSI transfer speeds have changed dramatically over the past several generations,
Quick Arbitration
Select (QAS)
Arbitration
read and write data
streaming
receiver The ultimate destination of data transmission; a terminal device
SCSI Small Computer Systems Interface: a processor-independent standard for system-level
single-ended An electrical signal protocol that transmits information through changes in voltage. Single-
training pattern SCSI is a parallel bus technology that is dependent on signals being transmitted on parallel
Vpath™ Technology The ATTO ExpressPCI UL4S with Vpath Technology offers data transfer rates of 320
Increases the data line frequency to equal that of the request signal, allowing sampling on
both the leading and trailing edges of the request signal. Clocking can be set to ensure
compatibility with legacy devices.
that the initiator can flush FIFOs and terminate pre-fetch sooner than previously possible.
Basically, the target warns the initiator that the transfer is almost complete so that it can
prepare for the next transfer while the target completes the current transfer.
other. At the receiving end, the difference between the two signals is measured and
interpreted. Noise on the bus will affect both the signal and its inverse equally, so the
difference between the two lines will remain the same and the noise cannot be misread as a
signal.
LEDs are used as indicator lights on all sorts of electronic devices.
single-ended technologies, allowing longer cabling configurations while consuming less
power than HVD technology.
passed as synchronous transfers. Maximizes bus use, minimizes command overhead and
allows multiple commands to be transferred in a single connection
cable specifications have remained constant. Higher speed and frequency signals have a
greater potential for reflection and distortion over distance. Pre-compensation techniques
slightly modify the SCSI signal to reduce the chance of these types of problems.
The process of devices negotiating for control of the bus with built-in “quiet times” so that fast
and legacy devices have an opportunity to take control of the bus. A fair, but somewhat
inefficient process, QAS speeds up the arbitration process by eliminating the bus free phase.
When combined with packetization, reduces command overhead and maximizes bus use.
Minimizes data transfer overhead by allowing a target to send one data stream (LQ) packet
followed by multiple data packets. Minimizes overhead of data transfers because the target
can send one data stream packet followed by multiple data packets
interface between a computer and intelligent devices including hard disks, floppy disks, CDROM, printers, scanners, etc.
ended SCSI uses standard TTL signal and ground pairs to transmit information over the SCSI
bus.
wires simultaneously. At higher speeds, minute differences in wire lengths and transmission
characteristics could cause problems. Training pattern testing measures these minute
differences and compensates for them.
MB/sec. With one external connector and one internal connector, Vpath Technology allows
both faster and slower devices to run without impacting the speed of faster devices.
2
SCSI is a key technology for storage
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