Replacing A Memory Module - Lenovo System x3100 M4 Installation And Service Manual

7. If you are instructed to return the DIMM, follow all packaging instructions, and use any packaging
materials for shipping that are supplied to you.

Replacing a memory module

Use this information to replace 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
on page 25).
If you are replacing a drive, make sure that:
• The server supports industry-standard, 1066, 1333 and 1600 MHz, PC3-12800 (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
the list of options for the server.
• The maximum amount of memory that the server supports is dependent on the type of memory that you
install in the server.
• The amount of usable memory is reduced, depending on the system 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
utility" on page 80.
• The maximum operating speed of the server is determined by the slowest DIMM in the server.
• If you install a pair of DIMMs in DIMM connectors 1 and 3, the size and speed 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.
• You can use compatible DIMMs from various manufacturers in the same pair.
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed.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.
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http://www.lenovo.com/ serverproven/
"System-board internal connectors"
; then, select your country and navigate to
"Using the Setup