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Chapter 1. Overview
Note: This guide refers to various hardware and software features and functions. The support for these
features and functions depends upon the limitations of your hardware and software. AIX and Linux
support all functions mentioned. If you are using another operating system, consult the appropriate
documentation for that operating system regarding support for the mentioned features and
functions.
This guide describes how to install the PCI-X Dual Channel Ultra320 SCSI Adapter in a system unit with a
PCI (peripheral component interconnect) bus. The PCI-X Dual Channel Ultra320 SCSI Adapter enables
you to use internal and external SCSI (small computer system interface) 8-bit or 16-bit devices. Each
channel operates independently with external LVD (low voltage differential) subsystems, internal LVD
devices, or external SE (single-ended) devices (see Appendix C, "Connecting SCSI Devices to the
Adapter," on page 33). None of these configurations can be connected simultaneously on a channel (see
"PCI-X Dual Channel Ultra320 SCSI Adapter 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-X Dual Channel Ultra320 SCSI Adapter runs on the following:
v 3.3V slots only
v Either 32-bit or 64-bit slots
The PCI-X Dual Channel Ultra320 SCSI Adapter supports up to Ultra320 SCSI synchronous data rates.
Maximum transfer rates are as follows:
v 16-bit Ultra320 SCSI device: 320 MB/s
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
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