IBM 8863 Service Guide - Page 124

Memory, module

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4. Make sure that the ac power LED on the top of the power supply is lit, indicating that the power supply is operating correctly. If the server is turned on, make sure that the dc power LED on the top of the power supply is lit also. 5. Replace the top cover. Memory module The following notes describe the types of dual inline memory modules (DIMMs) that the server supports and other information that you must consider when installing DIMMs: v The server supports 333 MHz, 1.8V, 240 pin, PC2-3200 single-ranked double data-rate (DDR) II, registered synchronous dynamic random-access memory (SDRAM) with error correcting code (ECC) DIMMs. These DIMMs must be compatible with the latest PC2-3200 SDRAM Registered DIMM specifications. For a list of the supported options for the server, see http://www.ibm.com/us/ compact/. v The server supports up to four memory cards. Each memory card holds up to four DIMMs. v There must be at least one memory card with one pair of DIMMs installed for the server to operate. v When you install additional DIMMs on a memory card, be sure to install them in pairs. All the DIMM pairs on each memory card must be the same size, and type. v You do not have to save new configuration information to the BIOS when installing or removing DIMMs. The only exception is if you replace a DIMM that was marked as Disabled in the Memory Settings menu. In this case, you must re-enable the row in the Configuration/Setup Utility program or reload the default memory settings. v When you restart the server after adding or removing a DIMM, the server displays a message that the memory configuration has changed. v Install the DIMMs on each memory card in the order shown in the following tables, depending on which memory configuration you want to use. You must install at least one pair of DIMMs on each memory card. Table 4. Memory card installation sequence for performance configuration Memory card order Memory card DIMM pair First 1 1 and 3 Second 2 1 and 3 Third 3 1 and 3 Fourth 4 1 and 3 Fifth 1 2 and 4 Sixth 2 2 and 4 Seventh 3 2 and 4 Eighth 4 2 and 4 Table 5. Memory card installation sequence for cost-sensitive configuration Memory card order Memory card DIMM pair First 1 1 and 3 2 and 4 108 IBM xSeries 366 Type 8863: Problem Determination and Service Guide

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4.
Make
sure
that
the
ac
power
LED
on
the
top
of
the
power
supply
is
lit,
indicating
that
the
power
supply
is
operating
correctly.
If
the
server
is
turned
on,
make
sure
that
the
dc
power
LED
on
the
top
of
the
power
supply
is
lit
also.
5.
Replace
the
top
cover.
Memory
module
The
following
notes
describe
the
types
of
dual
inline
memory
modules
(DIMMs)
that
the
server
supports
and
other
information
that
you
must
consider
when
installing
DIMMs:
v
The
server
supports
333
MHz,
1.8V,
240
pin,
PC2-3200
single-ranked
double
data-rate
(DDR)
II,
registered
synchronous
dynamic
random-access
memory
(SDRAM)
with
error
correcting
code
(ECC)
DIMMs.
These
DIMMs
must
be
compatible
with
the
latest
PC2-3200
SDRAM
Registered
DIMM
specifications.
For
a
list
of
the
supported
options
for
the
server,
see
compact/.
v
The
server
supports
up
to
four
memory
cards.
Each
memory
card
holds
up
to
four
DIMMs.
v
There
must
be
at
least
one
memory
card
with
one
pair
of
DIMMs
installed
for
the
server
to
operate.
v
When
you
install
additional
DIMMs
on
a
memory
card,
be
sure
to
install
them
in
pairs.
All
the
DIMM
pairs
on
each
memory
card
must
be
the
same
size,
and
type.
v
You
do
not
have
to
save
new
configuration
information
to
the
BIOS
when
installing
or
removing
DIMMs.
The
only
exception
is
if
you
replace
a
DIMM
that
was
marked
as
Disabled
in
the
Memory
Settings
menu.
In
this
case,
you
must
re-enable
the
row
in
the
Configuration/Setup
Utility
program
or
reload
the
default
memory
settings.
v
When
you
restart
the
server
after
adding
or
removing
a
DIMM,
the
server
displays
a
message
that
the
memory
configuration
has
changed.
v
Install
the
DIMMs
on
each
memory
card
in
the
order
shown
in
the
following
tables,
depending
on
which
memory
configuration
you
want
to
use.
You
must
install
at
least
one
pair
of
DIMMs
on
each
memory
card.
Table
4.
Memory
card
installation
sequence
for
performance
configuration
Memory
card
order
Memory
card
DIMM
pair
First
1
1
and
3
Second
2
1
and
3
Third
3
1
and
3
Fourth
4
1
and
3
Fifth
1
2
and
4
Sixth
2
2
and
4
Seventh
3
2
and
4
Eighth
4
2
and
4
Table
5.
Memory
card
installation
sequence
for
cost-sensitive
configuration
Memory
card
order
Memory
card
DIMM
pair
First
1
1
and
3
2
and
4
108
IBM
xSeries
366
Type
8863:
Problem
Determination
and
Service
Guide