IBM 8862 User Manual - Page 22

Configuration/Setup

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DIMMs in pairs; in mirrored mode, install DIMMs in quads, or groups of 4. Each pair or quad must be of the same type, capacity, and speed. v You must populate the DIMM connectors in the following order: 8-DIMM memory board First pair Second pair Third pair Fourth pair DIMMs 1 and 5 DIMMs 2 and 6 DIMMs 3 and 7 DIMMs 4 and 8 16-DIMM memory board in non-mirrored mode First pair Second pair Third pair Fourth pair Fifth pair Sixth pair Seventh pair Eighth pair DIMMs 1 and 3 DIMMs 14 and 16 DIMMs 2 and 4 DIMMs 13 and 15 DIMMs 5 and 7 DIMMs 10 and 12 DIMMs 6 and 8 DIMMs 9 and 11 16-DIMM memory board in mirrored mode First quad Second quad Third quad Fourth quad DIMMs 1, 3, 14, and 16 DIMMs 2, 4, 13, and 15 DIMMs 5, 7, 10 and 12 DIMMs 6, 8, 9 and 11 Use the Configuration/Setup Utility program to enable or disable mirrored mode. Memory mirroring enables you to improve the memory reliability of your server by creating a mirror of the data in memory port 1 and storing it in memory port 2. For memory mirroring to work, you must have the same amount of memory in both memory ports, and you must have DIMMs of the same size and clock speed in both memory ports. v The DIMMs constitute the following memory banks and use the following memory ports: 10 xSeries 365 Type 8861 and 8862: Installation Guide

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DIMMs
in
pairs;
in
mirrored
mode,
install
DIMMs
in
quads,
or
groups
of
4.
Each
pair
or
quad
must
be
of
the
same
type,
capacity,
and
speed.
v
You
must
populate
the
DIMM
connectors
in
the
following
order:
8-DIMM
memory
board
First
pair
DIMMs
1
and
5
Second
pair
DIMMs
2
and
6
Third
pair
DIMMs
3
and
7
Fourth
pair
DIMMs
4
and
8
16-DIMM
memory
board
in
non-mirrored
mode
First
pair
DIMMs
1
and
3
Second
pair
DIMMs
14
and
16
Third
pair
DIMMs
2
and
4
Fourth
pair
DIMMs
13
and
15
Fifth
pair
DIMMs
5
and
7
Sixth
pair
DIMMs
10
and
12
Seventh
pair
DIMMs
6
and
8
Eighth
pair
DIMMs
9
and
11
16-DIMM
memory
board
in
mirrored
mode
First
quad
DIMMs
1,
3,
14,
and
16
Second
quad
DIMMs
2,
4,
13,
and
15
Third
quad
DIMMs
5,
7,
10
and
12
Fourth
quad
DIMMs
6,
8,
9
and
11
Use
the
Configuration/Setup
Utility
program
to
enable
or
disable
mirrored
mode.
Memory
mirroring
enables
you
to
improve
the
memory
reliability
of
your
server
by
creating
a
mirror
of
the
data
in
memory
port
1
and
storing
it
in
memory
port
2.
For
memory
mirroring
to
work,
you
must
have
the
same
amount
of
memory
in
both
memory
ports,
and
you
must
have
DIMMs
of
the
same
size
and
clock
speed
in
both
memory
ports.
v
The
DIMMs
constitute
the
following
memory
banks
and
use
the
following
memory
ports:
10
xSeries
365
Type
8861
and
8862:
Installation
Guide