Installing A Memory Module - IBM 326 Option Installation Manual

Installing a memory module

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 uses interleaved dual inline memory modules (DIMMs), which you
v You can increase the amount of memory in the server by replacing the installed
v To optimize system performance in a single-microprocessor configuration, install
v To optimize system performance in a dual-microprocessor configuration, install
v The server supports 512 MB, 1 GB, and 2GB DIMMs. The memory can be
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326 Type 8848: Option Installation Guide
must add, remove, or replace in pairs. Each pair must be of the same type,
capacity, and speed. The server comes with one pair of DIMMs installed in DIMM
slots 1 and 2 on the system board.
DIMMs with higher-capacity DIMMs or by installing additional pairs of DIMMs.
DIMMs in the following sequence:
DIMM pair DIMM slots
1 1 and 2
2 3 and 4
DIMMs in the following sequence:
DIMM pair DIMM slots
1 1 and 2
2 7 and 8
3 3 and 4
4 5 and 6
expanded to a maximum of 16 GB using PC2700 2GB DIMMs, and to a
maximum of 8 GB using PC3200 DIMMs. See the ServerProven
http://www.ibm.com/pc/us/compat/ for a list of memory modules that the server
supports.
Important: For optimal system performance, make sure that the amount of
memory installed is the same for each microprocessor. For example, if you want
to install four 1GB DIMMs and four 512 MB DIMMs, install one pair of 1GB
DIMMs and one pair of 512 MB DIMMs for each microprocessor so that the total
amount of memory for each microprocessor equals 3 GB of RAM.
The following illustration shows the memory slots on the system board.
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list at