IBM 436854u User Manual - Page 43

Number, DIMMs, Installation, sequence, connectors

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The following illustration shows the dual inline memory module (DIMM) connectors and corresponding LEDs on the system board. DIMM 1 DIMM 2 DIMM 3 DIMM 4 LED LED LED LED DIMM 1 DIMM 2 DIMM 3 DIMM 4 Attention: Static electricity that is released to internal server components when the server is powered-on might cause the server to stop, which might result in the loss of data. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other grounding system when you work inside the server with the power on. To install a DIMM, complete the following steps: 1. Read the safety information that begins on page v and "Installation guidelines" on page 20. 2. Turn off the server and peripheral devices, and disconnect the power cords and all external cables. 3. Remove the side cover (see "Removing the side cover" on page 24). 4. Locate the DIMM connectors on the system board. Determine the connectors into which you will install the DIMMs. Install the DIMMs in the sequence shown in the following table. Table 5. DIMM installation sequence Number of DIMMs 1 Installation sequence (connectors) 1 2 (interleaved configuration) 1, 3 3 4 (interleaved configuration) Not supported 1, 3, 2, 4 Chapter 2. Installing optional devices 29

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The
following
illustration
shows
the
dual
inline
memory
module
(DIMM)
connectors
and
corresponding
LEDs
on
the
system
board.
DIMM 1
LED
DIMM 2
LED
DIMM 3
LED
DIMM 4
LED
DIMM 1
DIMM 2
DIMM 3
DIMM 4
Attention:
Static
electricity
that
is
released
to
internal
server
components
when
the
server
is
powered-on
might
cause
the
server
to
stop,
which
might
result
in
the
loss
of
data.
To
avoid
this
potential
problem,
always
use
an
electrostatic-discharge
wrist
strap
or
other
grounding
system
when
you
work
inside
the
server
with
the
power
on.
To
install
a
DIMM,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
20.
2.
Turn
off
the
server
and
peripheral
devices,
and
disconnect
the
power
cords
and
all
external
cables.
3.
Remove
the
side
cover
(see
“Removing
the
side
cover”
on
page
24).
4.
Locate
the
DIMM
connectors
on
the
system
board.
Determine
the
connectors
into
which
you
will
install
the
DIMMs.
Install
the
DIMMs
in
the
sequence
shown
in
the
following
table.
Table
5.
DIMM
installation
sequence
Number
of
DIMMs
Installation
sequence
(connectors)
1
1
2
(interleaved
configuration)
1,
3
3
Not
supported
4
(interleaved
configuration)
1,
3,
2,
4
Chapter
2.
Installing
optional
devices
29