Installing A Memory Module - IBM x3100 M5 Type 5457 Installation And Service Manual

Installing a memory module

Use this information to install a 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 you
install DIMMs (see "System-board internal connectors" on page 30).
If you are replacing a memory module, make sure that:
v The server supports industry-standard, 1066, 1333 and 1600 MHz, PC3-12800
v The maximum amount of memory that the server supports is dependent on the
v The amount of usable memory is reduced, depending on the system
v The maximum operating speed of the server is determined by the slowest
v If you install a pair of DIMMs in DIMM connectors 1 and 3, the size and speed
v You can use compatible DIMMs from various manufacturers in the same pair.
v When you install or remove DIMMs, the server configuration information
v The specifications of a DDR3 DIMM are on a label on the DIMM, in the
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System x3100 M5 Type 5457: Installation and Service Guide
(single-rank or dual-rank) double-data-rate 3 (DDR3), registered or unbuffered,
synchronous dynamic random-access memory (SDRAM) dual inline memory
modules (DIMMs) with error correcting code (ECC). For a list of supported
options for the server, see http://www.ibm.com/systems/info/x86servers/
serverproven/compat/us; then, select your country and navigate to the list of
options for the server.
type of memory that you install in the server.
configuration. A certain amount of memory must be reserved for system
resources. To view the total amount of installed memory and the amount of
configured memory, run the Setup utility. For additional information, see "Using
the Setup utility" on page 98.
DIMM in the server.
of the DIMMs that you install in DIMM connectors 1 and 3 must match each
other. However, they do not have to be the same size and speed as the DIMMs
that are installed in DIMM connectors 2 and 4.
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
Attention: Static electricity that is released to internal server components when
the server is powered-on might cause the server to stop, which could result in
the loss of data. To avoid this potential problem, always use an
electrostatic-discharge wrist strap or other grounding system when working
inside the server with the power on.
following format.
ggg eRxff-PC3-wwwwwm-aa-bb-cc
where:
– ggg is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
– e is the number of ranks
- 1 = single-rank
- 2 = dual-rank
- 4 = quad-rank
– ff is the device organization (bit width)
- 4 = x4 organization (4 DQ lines per SDRAM)
- 8 = x8 organization
- 16 = x16 organization