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,
as
follows:
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
M80
and
Eserver
pSeries
660
Model
6M1
systems
are
multiprocessor,
multibus
systems
packaged
in
two
to
five
drawers.
The
processors
and
memory
are
packaged
in
an
8
EIA-unit
central
electronics
complex
(CEC)
drawer,
and
the
optional
DASD
and
I/O
devices
are
in
5
EIA-unit
I/O
drawers.
The
basic
system
consists
of
one
CEC
drawer
and
one
I/O
drawer
in
the
same
rack.
You
can
expand
the
system
by
adding
up
to
three
additional
I/O
drawers
in
a
minimum
of
two
racks.
A
number
of
cables
connect
the
CEC
and
I/O
drawers.
These
cables
include:
v
SPCN
(System
Power
Control
Network)
cables
v
V/S
COMM
cables
v
RIO
(Remote
Input
Output)
cables
v
JTAG
cable
An
ac
power
cord
(dc
power
cord
in
a
dc-powered
system)
is
connected
to
the
CEC
drawer
(drawer
1),
primary
I/O
drawer
(drawer
0),
and
secondary
I/O
drawer
(drawer
2).
You
can
also
connect
two
additional
secondary
drawers
(drawers
3
and
4)
in
another
rack
with
a
separate
power
distribution
unit
and
ac
power
cord
(dc
power
cord
in
a
dc-powered
system).
A
dc-powered
system
has
no
power
distribution
unit.
1
Summary of Contents for RS/6000 Enterprise Server M80
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