Installing Additional Memory - IBM LS42 - BladeCenter - 7902 Installation And User Manual

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
v The system supports error correcting code (ECC) protected, industry-standard
v The server supports two-way memory interleaving.
v Depending on the memory configuration, the blade server can support a
v The optional DIMMs that are available for the blade server are 1 GB, 2 GB, and
v All DIMMs must be installed in pairs of the same size, speed, type, technology,
v If you want to take advantage of Chipkill memory, each DIMM that is installed in
v For a current list of supported DIMMs for the blade server, see
v For each installed microprocessor, a set of four DIMM connectors is enabled (see
connectors per processor). If an MPE is installed, there are also eight DIMM
connectors (four DIMM connectors per processor) on the MPE system board.
240-pin, 72-bit technology very low profile (VLP) double data rate synchronous
DRAM dual inline memory modules (DDR-2 SDRAM DIMMs).
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.
4 GB.
and physical design. You can use compatible DIMMs from different
manufacturers.
the blade server must support the Chipkill technology.
http://www.ibm.com/servers/eserver/serverproven/compat/us/.
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
1 2
1 (in blade X
server)
X X
2 (in blade X
server)
X
X X
X X
3 (2 in blade X
server, 1 in MPE
X
unit)
X
X X
X X
X X
Blade server
DIMM connector
3 4 5 6 7 8
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
MPE
DIMM connector
1 2 3 4 5
X X
X X
X X
X X X X
Chapter 3. Installing optional devices
6 7 8
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