Installing
additional
memory
The
following
notes
describe
the
types
of
dual
inline
memory
modules
(DIMMs)
that
the
blade
server
supports
and
other
information
that
you
must
consider
when
you
install
DIMMs:
v
The
blade
server
system
board
contains
eight
DIMM
connectors
(four
DIMM
connectors
per
processor).
If
an
MPE
is
installed,
there
are
also
eight
DIMM
connectors
(four
DIMM
connectors
per
processor)
on
the
MPE
system
board.
v
The
system
supports
error
correcting
code
(ECC)
protected,
industry-standard
240-pin,
72-bit
technology
very
low
profile
(VLP)
double
data
rate
synchronous
DRAM
dual
inline
memory
modules
(DDR-2
SDRAM
DIMMs).
v
The
server
supports
two-way
memory
interleaving.
v
Depending
on
the
memory
configuration,
the
blade
server
can
support
a
minimum
of
2
GB
and
a
maximum
of
32
GB
of
system
memory
for
single-width
blade
servers
or
a
maximum
of
64
GB
of
system
memory
for
blade
servers
with
an
MPE
installed.
v
The
optional
DIMMs
that
are
available
for
the
blade
server
are
1
GB,
2
GB,
and
4
GB.
v
All
DIMMs
must
be
installed
in
pairs
of
the
same
size,
speed,
type,
technology,
and
physical
design.
You
can
use
compatible
DIMMs
from
different
manufacturers.
v
If
you
want
to
take
advantage
of
Chipkill
memory,
each
DIMM
that
is
installed
in
the
blade
server
must
support
the
Chipkill
technology.
v
For
a
current
list
of
supported
DIMMs
for
the
blade
server,
see
http://www.ibm.com/servers/eserver/serverproven/compat/us/.
v
For
each
installed
microprocessor,
a
set
of
four
DIMM
connectors
is
enabled
(see
the
following
table
for
more
information).
The
following
table
lists
the
available
microprocessor
and
DIMM
combinations
for
the
blade
server
and
MPE.
Note:
Only
the
BladeCenter
LS42
(Type
7902)
with
an
installed
MPE
can
support
more
than
two
microprocessors.
Number
of
micro-
processors
Blade
server
MPE
DIMM
connector
DIMM
connector
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
(in
blade
server)
X
X
X
X
X
X
2
(in
blade
server)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
3
(2
in
blade
server,
1
in
MPE
unit)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Chapter
3.
Installing
optional
devices
27
Summary of Contents for LS42 - BladeCenter - 7902
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