Installing A Memory Module - IBM System x3250 M3 Type 4251 Installation And User Manual

3. If the server has been installed in a rack, slide the server out from the rack
4. Press down firmly on the blue tab on the top of the cover (on the right side near
5. Lift the server cover off the server and set it aside.
Attention:
turn on the server.

Installing 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 optional-device connectors" on page 25 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
note of which LEDs are lit, including the LEDs that are lit on the front
panel, on the rear panel, and LEDs inside the server on the system
board; then, see the Problem Determination and Service Guide for
information about how to solve the problem.
enclosure.
the front of the server) and slide the cover toward the rear of the server until the
cover has disengaged from the chassis.
Cover-release
button
For proper cooling and airflow, replace the server cover before 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 30 and "Registered DIMMs (RDIMMs)" on page 32 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.
Chapter 2. Installing optional devices
29