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 “System-board internal connectors” on page 30).
If you are replacing a drive, make sure that:
v 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 http://www.ibm.com/systems/info/x86servers/
serverproven/compat/us; then, select your country and navigate to the list of
options for the server.
v The maximum amount of memory that the server supports is dependent on the
type of memory that you install in the server.
v 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 Using
the Setup utility.
v The maximum operating speed of the server is determined by the slowest
DIMM in the server.
v 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.
v You can use compatible DIMMs from various manufacturers in the same pair.
v 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
Figure 188. DIMM removal
274 System x3100 M5 Type 5457: Installation and Service Guide
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