IBM 88614RX Maintenance Manual - Page 49

Memory modules, sockets. The server supports 512 MB, 1 GB, and 2 GB DIMMs. See

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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 rate (DDR) SDRAM, PC2100 registered DIMMs with Chipkill memory protection. 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 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. v For a server with an 8-DIMM-connector memory cassette, you can increase the 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. v The server uses interleaved DIMMs, which requires that you install DIMMs in 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. v You must populate the DIMM connectors in the following order with the largest size first: 8-DIMM memory board First pair Second pair Third pair Fourth pair DIMMs 1 and 5 DIMMs 2 and 6 DIMMs 3 and 7 DIMMs 4 and 8 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 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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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
rate (DDR) SDRAM, PC2100 registered DIMMs with Chipkill memory protection.
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
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.
v
For a server with an
8-DIMM-connector memory cassette,
you can increase the
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.
v
The server uses interleaved DIMMs, which requires that you install DIMMs in
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.
v
You must populate the DIMM connectors in the following order with the largest
size first:
8-DIMM memory board
First pair
DIMMs 1 and 5
Second pair
DIMMs 2 and 6
Third pair
DIMMs 3 and 7
Fourth pair
DIMMs 4 and 8
16-DIMM memory board in non-mirrored mode
First pair
DIMMs 1 and 3
Second pair
DIMMs 14 and 16
Third pair
DIMMs 2 and 4
Fourth pair
DIMMs 13 and 15
Fifth pair
DIMMs 5 and 7
Sixth pair
DIMMs 10 and 12
Seventh pair
DIMMs 6 and 8
Eighth pair
DIMMs 9 and 11
Chapter 4. Installing options
39