Installing
a
memory
module
The
following
notes
describe
the
types
of
dual
inline
memory
modules
(DIMMs)
that
your
server
supports
and
other
information
that
you
must
consider
when
installing
DIMMs:
v
Your
server
uses
interleaved
dual
inline
memory
modules
(DIMMs),
which
you
must
add,
remove,
or
replace
in
pairs.
Each
pair
must
be
of
the
same
type,
capacity,
and
speed.
The
server
comes
with
one
pair
of
DIMMs
installed
in
DIMM
slots
1
and
2
on
the
system
board.
v
You
can
increase
the
amount
of
memory
in
the
server
by
replacing
the
installed
DIMMs
with
higher-capacity
DIMMs
or
by
installing
additional
pairs
of
DIMMs.
v
To
optimize
system
performance
in
a
single-microprocessor
configuration,
install
DIMMs
in
the
following
sequence:
DIMM
pair
DIMM
slots
1
1
and
2
2
3
and
4
v
To
optimize
system
performance
in
a
dual-microprocessor
configuration,
install
DIMMs
in
the
following
sequence:
DIMM
pair
DIMM
slots
1
1
and
2
2
7
and
8
3
3
and
4
4
5
and
6
v
The
server
supports
512
MB,
1
GB,
and
2GB
DIMMs.
The
memory
can
be
expanded
to
a
maximum
of
16
GB
using
PC2700
2GB
DIMMs,
and
to
a
maximum
of
8
GB
using
PC3200
DIMMs.
See
the
ServerProven
®
list
at
http://www.ibm.com/pc/us/compat/
for
a
list
of
memory
modules
that
the
server
supports.
Important:
For
optimal
system
performance,
make
sure
that
the
amount
of
memory
installed
is
the
same
for
each
microprocessor.
For
example,
if
you
want
to
install
four
1GB
DIMMs
and
four
512
MB
DIMMs,
install
one
pair
of
1GB
DIMMs
and
one
pair
of
512
MB
DIMMs
for
each
microprocessor
so
that
the
total
amount
of
memory
for
each
microprocessor
equals
3
GB
of
RAM.
The
following
illustration
shows
the
memory
slots
on
the
system
board.
22
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Type
8848:
Option
Installation
Guide
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