ClearPath Dorado 300/400/700/800/4000/4100 Server I/O Planning ...

Section 1
PCI-Based I/O Hardware
This section covers the configuration of the Peripheral Component Interconnect
(PCI)-based hardware, I/O processors, host bus adapters (HBAs), and network
interface cards (NICs). It is intended to help the service representative set up and
maintain the I/O hardware complex.
Note: The Dorado 400, 4000, and 4100 Series only support the SIOP PCI-based I/O
hardware.
Documentation Updates
This document contains all the information that was available at the time of
publication. Changes identified after release of this document are included in problem
list entry (PLE) 18850290. To obtain a copy of the PLE, contact your Unisys
representative or access the current PLE from the Unisys Product Support Web site:
http://www.support.unisys.com/all/ple/18850290
Note: If you are not logged into the Product Support site, you will be asked to do
so.
1.1. Architecture Overview
With the introduction of the Dorado 300 Series, the architecture of the Dorado
systems was revolutionized. The Dorado 400, 4000, and 4100 Series systems move
that revolution forward.
1.1.1. Dorado 300 Series
The Dorado 300 Series systems contain cell pairs. One cell contains the instruction
processors (IPs) and is attached to another cell for input/output (I/O).
The minimum configuration contains the following:
• One IP cell with 4 OS 2200 IPs and 4 GB of memory
• One I/O cell
For systems with more than one IP cell, the cells are arranged so that the IP cells are
adjacent. For example, IP cell 0 is adjacent to IP cell 1. I/O cell 0 is below the two IP
cells and I/O cell 1 is above the two IP cells.
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