Installing
memory
modules
This
section
describes
the
types
of
dual
inline
memory
modules
(DIMMs)
that
the
server
supports
and
other
information
that
you
must
consider
when
installing
DIMMs,
as
well
as
how
to
install
memory
modules
in
the
server.
Before
you
install
memory
modules,
read
the
following
information:
v
The
server
uses
interleaved
DIMMs,
which
you
must
add,
remove,
or
replace
in
pairs.
Each
pair
must
be
of
the
same
type,
capacity,
and
speed.
Adding
memory
to
the
server
is
an
easy
way
to
improve
system
performance.
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
through
one
of
the
following
methods:
–
Replacing
the
installed
DIMMs
with
higher-capacity
DIMMs
–
Installing
an
additional
pair
of
DIMMs
in
slots
3
and
4
for
a
single
microprocessor
configuration
–
Installing
an
additional
pair
of
DIMMs
in
slots
5
and
6
for
a
dual-microprocessor
configuration
Note:
For
optimal
dual-microprocessor
performance,
install
DIMMs
in
slots
1,
2,
5,
and
6.
The
server
supports
512
MB
and
1
GB
DIMMs.
See
the
ServerProven
®
list
at
http://www.ibm.com/pc/us/compat/
for
a
list
of
memory
modules
that
are
supported
by
the
server.
The
following
illustration
shows
the
memory
slots
on
the
system
board.
DIMM 4 (DDR4)
DIMM 3 (DDR3)
DIMM 2 (DDR2)
DIMM 1 (DDR1)
DIMM 6 (DDR6)
DIMM 5 (DDR5)
Complete
the
following
steps
to
install
DIMMs:
1.
Read
“Safety
information”
on
page
101
and
“Installation
guidelines”
on
page
25.
2.
Turn
off
the
server
and
all
attached
peripheral
devices.
Disconnect
all
power
cords;
then,
disconnect
all
external
signal
cables
from
the
server.
Chapter
4.
Installing
options
37
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