Memory Module - IBM System x3800 Type 8865 User Manual

If you have other options to install or remove, do so now; otherwise, go to
"Completing the installation" on page 49.

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 333 MHz, 1.8V, 240 pin, PC2-3200 single-ranked double
v The server supports up to four memory cards. Each memory card holds up to
v There must be at least one memory card with one pair of DIMMs installed for the
v When you install additional DIMMs on a memory card, be sure to install them in
v DIMMs can be hot-added once without having to reconfigure the server. If you
v Add odd-numbered DIMMs to each available memory card first, and then add the
v You do not have to save new configuration information to the BIOS when
v When you restart the server after adding or removing a DIMM, the server
v Install the DIMMs on each memory card in the order shown in the following
data-rate (DDR) II, registered synchronous dynamic random-access memory
(SDRAM) with error correcting code (ECC) DIMMs. These DIMMs must be
compatible with the latest PC2-3200 SDRAM Registered DIMM specifications.
For a list of the supported options for the server, see http://www.ibm.com/servers/
eserver/serverproven/compat/us/.
four DIMMs.
server to operate.
pairs. All the DIMM pairs on each memory card must be the same size and type.
hot-add additional DIMMs, you must reconfigure the server using the
Configuration/Setup Utility program.
even-numbered pairs.
installing or removing DIMMs. The only exception is if you replace a DIMM that
was marked as Disabled in the Memory Settings menu. In this case, you must
re-enable the row in the Configuration/Setup Utility program or reload the default
memory settings.
displays a message that the memory configuration has changed.
tables, depending on which memory configuration you want to use. Each memory
card must have at least one pair of DIMMs.
Table 3. Primary memory card installation sequence
Installation order
First
Second
Third
Fourth
Fifth
Sixth
Seventh
Eighth
Memory card
1
2
3
4
1
2
3
4
DIMM pair
1 and 3
1 and 3
1 and 3
1 and 3
2 and 4
2 and 4
2 and 4
2 and 4
Chapter 2. Installing options
35