Chapter 1. Overview - IBM PCI Dual Channel Ultra3 SCSI Adapter Installation And Using Manual

Chapter 1. Overview

Note: This document may contain references to the AIX operating system. If you are
This guide describes how to install the PCI Dual Channel Ultra3 SCSI Adapter in a
system unit with a PCI (peripheral component interconnect) bus. The PCI Dual Channel
Ultra3 SCSI Adapter enables you to use internal and external SCSI (small computer
system interface) 8- or 16-bit devices. Each channel operates independently with
external LVD (low voltage differential) subsystems, internal LVD devices, or external
single-ended devices (see Appendix C, "Connecting SCSI Devices to the Adapter" on
page 25). None of these configurations can be connected simultaneously on a channel
(see "SCSI Connectors" on page 2).
The adapter conforms to the ANSI (American National Standards Institute) SCSI
Standard X3T10/1365D and to the PCI local bus specification, revision 2.2.
The PCI Dual Channel Ultra3 SCSI Adapter runs on the following:
v Either 3V or 5V slots
v Either 32-bit or 64-bit slots
The PCI Dual Channel Ultra3 SCSI Adapter supports Ultra3 SCSI synchronous data
rates up to 80 MHz in LVD operation. Maximum transfer rates are as follows:
v 16-bit Ultra3 SCSI device: 160 MB/s
v 16-bit Ultra2 SCSI device: 80 MB/s
v 16-bit Ultra SCSI device in single-ended Ultra operation: 40 MB/s
v 8-bit Fast SCSI device: 10 MB/s
using another operating system, consult the appropriate documentation for that
operating system.
This document may describe hardware features and functions. While the
hardware supports them, the realization of these features and functions depends
upon support from the operating system. AIX provides this support. If you are
using another operating system, consult the appropriate documentation for that
operating system regarding support for those features and functions.
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