Memory
DIMM
Locations
The
memory
DIMMs
used
in
the
system
are
located
on
the
system
backplane.
Your
system
contains
eight
memory
DIMM
slots.
Associated
with
each
memory
DIMM
slot
is
an
LED,
which
is
located
on
the
edge
of
the
system
backplane.
A
lit
LED
indicates
a
problem
with
a
specific
memory
DIMM.
For
more
information
on
the
locations
of
the
system
LEDs,
go
to
“System
LED
Locations”
on
page
17.
The
following
rules
must
be
followed
when
removing
or
installing
memory
DIMMs:
v
Memory
DIMMs
must
be
installed
in
quads.
However,
you
do
not
need
to
install
four
new
DIMMs
in
a
quad
when
you
have
a
memory
problem.
Exchange
each
DIMM,
starting
the
system
after
each
change,
until
the
faulty
DIMM
has
been
replaced.
Notes:
1.
Memory
DIMMs
must
be
installed
in
quads
and
in
the
correct
slots.
A
quad
is
a
group
of
four
memory
DIMMs.
2.
Quads
are
populated
in
DIMM
slots
1,
3,
6,
8
first,
and
then
2,
4,
5,
7.
The
only
two
valid
slot
combinations
that
you
can
use
are
1,
3,
6,
and
8
and
2,
4,
5,
and
7.
3.
At
least
one
quad
of
DIMMs
is
installed
on
the
system
backplane.
See
the
following
illustration.
4.
Each
memory
DIMM
in
a
quad
must
be
the
same
type
and
size.
However,
both
quads
on
the
system
backplane
are
not
required
to
be
the
same.
v
The
system
must
have
at
least
four
memory
DIMMs
installed
(1
quad).
Chapter
1.
Reference
Information
13
Summary of Contents for 9114-275 - IntelliStation POWER 275
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