v
The
server
comes
with
a
minimum
of
two
512
MB
DIMMs
or
two
1
GB
DIMMs,
installed
in
slots
1
and
3
or
slots
5
and
7.
When
you
install
additional
DIMMs,
you
must
install
two
identical
DIMMs
at
a
time,
in
the
order
shown
in
the
following
table,
to
maintain
performance.
Table
2.
DIMM
installation
sequence
Pair
DIMM
connectors
1
1
and
3
2
5
and
7
3
2
and
4
4
6
and
8
DIMM 5 connector
DIMM 1 connector
DIMM 6 connector
DIMM 2 connector
DIMM 7 connector
DIMM 3 connector
DIMM 8 connector
DIMM 4 connector
Branch 1
Branch 0
Channel 2
Channel 1
Channel 3
Channel 0
v
Each
DIMM
in
a
pair
must
be
the
same
size,
speed,
type,
and
technology
to
ensure
that
the
server
will
operate
correctly.
v
You
can
configure
the
server
to
use
memory
mirroring.
Memory
mirroring
stores
data
in
two
pairs
of
DIMMs
simultaneously.
If
a
failure
occurs,
the
memory
controller
switches
from
the
active
pair
to
the
mirroring
pair.
Memory
mirroring
reduces
the
amount
of
available
memory.
Enable
memory
mirroring
through
the
Configuration/Setup
Utility
program.
Figure
1.
DIMM
connectors,
channels,
and
branches
Chapter
2.
Installing
options
37
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