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Memory modules
The following notes describe the types of dual inline memory modules (DIMMs) that
your server supports and other information that you must consider when installing
DIMMs:
v Your server supports 2.5 V, 184-pin, error correcting code (ECC), double-data
v DIMMs can be removed and replaced through the of the memory cassette.
v You can increase the amount of memory in the server by replacing the DIMMs
v For a server with an 8-DIMM-connector memory cassette, you can increase the
v The server uses interleaved DIMMs, which requires that you install DIMMs in
v You must populate the DIMM connectors in the following order with the largest
rate (DDR) SDRAM, PC2100 registered DIMMs with Chipkill memory protection.
with higher-capacity DIMMs or installing additional pairs of DIMMs in open
sockets. The server supports 512 MB, 1 GB, and 2 GB DIMMs. See the
®
ServerProven
list at http://www.ibm.com/pc/compat/ for an updated list of
memory modules supported by the server.
memory capabilities of your server by upgrading to the 16-connector memory
cassette. The 16-connector memory cassette supports memory mirroring and
Memory ProteXion. See the ServerProven list at http://www.ibm.com/pc/compat/
for a list of memory cassettes supported by the server. More information on
Memory ProteXion and memory mirroring is available in the User's Guide on the
xSeries Documentation CD.
specific configurations:
– In the 8-DIMM-connector memory cassette, install DIMMs in pairs. Each pair
must be of the same type, capacity, and speed. The DIMM connectors are
arranged in two groups of four rows each; the server comes with one pair of
DIMMs installed in DIMM connectors 1 and 5 in the memory cassette.
– In the 16-DIMM memory cassette, the DIMM connectors are arranged in two
groups of eight rows each. In non-mirrored mode, install DIMMs in pairs; in
mirrored mode, install DIMMs in quads, or groups of 4. Each pair or quad
must be of the same type, capacity, and speed.
size first:
8-DIMM memory board
First pair
Second pair
Third pair
Fourth pair
16-DIMM memory board in non-mirrored mode
First pair
Second pair
Third pair
Fourth pair
Fifth pair
Sixth pair
Seventh pair
Eighth pair
DIMMs 1 and 5
DIMMs 2 and 6
DIMMs 3 and 7
DIMMs 4 and 8
DIMMs 1 and 3
DIMMs 14 and 16
DIMMs 2 and 4
DIMMs 13 and 15
DIMMs 5 and 7
DIMMs 10 and 12
DIMMs 6 and 8
DIMMs 9 and 11
Chapter 4. Installing options
39
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