Installing A Memory Module - IBM x3250 M3 Problem Determination And Service Manual

6. If you are instructed to return the DIMM, follow all packaging instructions, and

Installing a memory module

The following notes describe the types of DIMMs that the server supports and other
information that you must consider when you install DIMMs (see "System-board
optional device connectors" on page 19 for the location of the DIMM connectors):
v The server supports only industry-standard double-data-rate 3 (DDR3), 1066 or
v The maximum amount of memory that the server supports is dependent on the
v The maximum operating speed of the server is determined by the slowest DIMM
v If you install a pair of DIMMs in DIMM connectors 2 and 5, the size and speed of
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 following
152
IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
use any packaging materials for shipping that are supplied to you.
1333 MHz, PC3-8500 or PC3-10600 (single-rank, dual-rank, or quad-rank),
registered or unbuffered, synchronous dynamic random-access memory
(SDRAM) dual inline memory modules (DIMMs) with error correcting code (ECC).
See http://www.ibm.com/servers/eserver/serverproven/compat/us/ for a list of
supported memory modules for the server.
type of memory that you install in the server. See "Unbuffered DIMMs (UDIMMs)"
on page 153 and "Registered DIMMs (RDIMMs)" on page 154 for more
information. The server supports a maximum of six single-rank or dual-rank
DIMMs, depending on the type of DIMM you install in the server.
in the server.
the DIMMs that you install in DIMM connectors 2 and 5 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 1 and 4.
changes. When you restart the server, the system displays a message that
indicates that the memory configuration has changed.
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