Removing The Cover; Installing A Memory Module - IBM System x3250 Installation Manual

Removing the cover

To remove the cover, complete the following steps:
1. Read the safety information that begins on page v and "Installation guidelines"
2. Turn off the server and all attached devices.
3. Disconnect all external cables and power cords.
4. Press the cover-release button.
5. Slide the cover back approximately 1.27 cm (0.5 inches); then, lift it off the
Attention:
server. Operating the server for extended periods of time (more than 30 minutes)
with the cover removed might damage server components.

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 installing
DIMMs:
v The server supports 512 MB, 1 GB, and 2 GB DIMMs, for a maximum of 8 GB of
v The amount of usable memory will be reduced depending on the system
v The server comes with one 512 MB DIMM installed in DIMM connector 1. Some
v If you install a pair of DIMMs in DIMM connectors 2 and 4, they do not have to
on page 7.
Cover-release
button
server.
For proper cooling and airflow, replace the cover before turning on the
system memory. See http://www.ibm.com/servers/eserver/serverproven/compat/
us/ for a list of memory modules that you can use with the server.
configuration. A certain amount of memory must be reserved for system
resources. Use the system summary in the Configuration/Setup Utility program to
view the total amount of installed memory and the amount of configured memory
(see "Using the Configuration/Setup Utility program" on page 26).
models come with a second 512 MB DIMM installed in DIMM connector 3. If one
DIMM is installed, when you install an additional DIMM, it must be installed in
DIMM connector 3, and it must be the same size, speed, type, and technology as
the DIMM that is installed in DIMM connector 1. You can mix compatible DIMMs
from various manufacturers. The third and fourth DIMMs must be installed as a
pair, in DIMM connectors 2 and 4.
be the same size, speed, type, and technology as the DIMMs that are installed in
Chapter 2. Installing optional devices
9