IBM 88743RU User Guide - Page 48

Installing, DIMMs

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4. Prepare the new memory card: a. Touch the static-protective package that contains the memory card to any unpainted surface on the outside of the server; then, remove the memory card from the package. b. Place the memory card on a flat, static-protected surface with the DIMM connectors facing up. c. Install memory DIMMs in the memory card (see "Installing DIMMs"). 5. Remove the memory card from the server: Attention: When moving the memory card, do not allow it to touch any components or structures inside the server. a. Make sure that the retention levers on the edge of the memory card are fully open. b. Lift the memory card out of the server. 6. Replace the memory card: a. Grasp the new memory card by the retention levers and turn the memory card so that the connector aligns with the connector on the microprocessor board. b. Insert the memory card into the memory card connector. c. Press the memory card into the connector and close the small retention lever. d. Wait two seconds and close the large retention lever. If you have other options to install or remove, do so now; otherwise, go to "Completing the installation" on page 47. Installing DIMMs DIMMs must be installed in pairs of the same type and speed. To use the memory mirroring feature, all the DIMMs that are installed in the server must be of the same type and speed, and the operating system must support the feature. The following instructions are for installing one pair of DIMMs. To install DIMM pairs on more than one memory card, repeat steps 3 though 7 for each memory card. Installing a DIMM To install a DIMM, complete the following steps: 1. Read the safety information that begins on page v and "Installation guidelines" on page 21. 2. Turn off the server and peripheral devices, and disconnect the power cords and all external cables necessary to replace the device. 36 IBM System x3950 Type 8878 and System x3950 E Type 8879: User's Guide

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4.
Prepare
the
new
memory
card:
a.
Touch
the
static-protective
package
that
contains
the
memory
card
to
any
unpainted
surface
on
the
outside
of
the
server;
then,
remove
the
memory
card
from
the
package.
b.
Place
the
memory
card
on
a
flat,
static-protected
surface
with
the
DIMM
connectors
facing
up.
c.
Install
memory
DIMMs
in
the
memory
card
(see
“Installing
DIMMs”).
5.
Remove
the
memory
card
from
the
server:
Attention:
When
moving
the
memory
card,
do
not
allow
it
to
touch
any
components
or
structures
inside
the
server.
a.
Make
sure
that
the
retention
levers
on
the
edge
of
the
memory
card
are
fully
open.
b.
Lift
the
memory
card
out
of
the
server.
6.
Replace
the
memory
card:
a.
Grasp
the
new
memory
card
by
the
retention
levers
and
turn
the
memory
card
so
that
the
connector
aligns
with
the
connector
on
the
microprocessor
board.
b.
Insert
the
memory
card
into
the
memory
card
connector.
c.
Press
the
memory
card
into
the
connector
and
close
the
small
retention
lever.
d.
Wait
two
seconds
and
close
the
large
retention
lever.
If
you
have
other
options
to
install
or
remove,
do
so
now;
otherwise,
go
to
“Completing
the
installation”
on
page
47.
Installing
DIMMs
DIMMs
must
be
installed
in
pairs
of
the
same
type
and
speed.
To
use
the
memory
mirroring
feature,
all
the
DIMMs
that
are
installed
in
the
server
must
be
of
the
same
type
and
speed,
and
the
operating
system
must
support
the
feature.
The
following
instructions
are
for
installing
one
pair
of
DIMMs.
To
install
DIMM
pairs
on
more
than
one
memory
card,
repeat
steps
3
though
7
for
each
memory
card.
Installing
a
DIMM
To
install
a
DIMM,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
21.
2.
Turn
off
the
server
and
peripheral
devices,
and
disconnect
the
power
cords
and
all
external
cables
necessary
to
replace
the
device.
36
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
User’s
Guide