IBM 6H0, Service Manual

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Chapter 1. Reference Information
This chapter provides an overview of the system, including a logical description and a
physical overview. Additional details pertaining to the system are also provided. These
include:
v
Memory overview and placement
v
General description of the operator panel
v
Cabling rules
v System location rules and descriptions
v Powering on and off the system
v Power flow
v Data flow
Overview
The RS/6000 Enterprise Server Model H80,
Eserver
pSeries 660 Models 6H0 and
6H1 are multiprocessor, multibus systems packaged in drawers. The processors and
memory are packaged in a 5 EIA-unit central electronics complex (CEC drawer), and
the I/O devices are in a 5 EIA-unit I/O drawer. The basic system consists of one CEC
drawer and one I/O drawer in the same rack. Connections between the CEC drawer
and I/O drawers are made through a number of cables, which include the V/S COMM
cable, RIO (remote input/output) cables, and JTAG cable.
Processors
The Model H80 and Model 6H1 can have one to six processors, of either of two
processor types, in various configurations:
v Minimum configuration is one 450 MHz processor, which has 2 MB of L2 cache.
v
Two or four 450 MHz processors, each with 4 MB of L2 cache.
v
Six 500 MHz processors, each with 4 MB of L2 cache.
OR
v Minimum configuration is either one 600 MHz processor, which has 2 MB of L2
cache, or one 750 MHz processor, which has 8 MB of L2 cache.
v Two or four 600 MHz processors, each with 4 MB of L2 cache.
v
Two or four 750 MHz processors, each with 8 MB of L2 cache.
v
Six 668 MHz processors, each with 8 MB of L2 cache.
v
Six 750 MHz processors, each with 8 MB of L2 cache.
The Model 6H0 can have one to four processors, of either of two processor types, in
various configurations:
v Minimum configuration is one 450 MHz processor, which has 2 MB of L2 cache.
v
Two or four 450 MHz processors, each with 4 MB of L2 cache.
OR
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