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Memory DIMM Location
The memory DIMMs used in the pSeries 630 Model 6C4 and Model 6E4 are located on
the processor card. Your system contains either one or two processor cards, each card
with 8 memory DIMM slots. Associated with each memory DIMM slot is a LED, which is
located on the edge of the processor card. A lit LED indicates a problem with a specific
memory DIMM. The following is a list of rules that must be followed when removing or
installing memory DIMMs:
v Memory DIMMs must installed in quads. However, you do not need to install 4 new
DIMMs in a quad when you have a memory problem. Swap out each DIMM bringing
the system back up with each change until the faulty DIMM has been replaced.
Note: A quad is a group of four memory DIMMs. Each memory DIMM in a quad
v The system must have at least four memory DIMMs installed.
(1 quad)
v The quad slot combinations are 1, 3, 6, and 8 or 2, 4, 5, and 7.
Note: 1, 3, 6, and 8 and 2, 4, 5, and 7 are the only possible slot combinations
v There is no requirement as to which processor card is populated with memory on a
two-processor-card system.
Note: A processor card containing no memory is still functional. (For example, a
The following table shows valid memory configurations for one and two processor
cards:
Number of Processor Cards
1 Processor Card
2 Processor Cards
Note: The maximum amount of system memory varies by model.
Eserver pSeries 630 Models 6C4 and 6E4 Service Guide
28
must be the same type and size. However, both quads on the same processor
card are not required to be the same.
recognized by the system.
system containing two processor cards has all of its memory installed on
processor card 1 and no memory installed on processor card 2. Processor
card 2 has no memory-storage capacity, but functions as a processor card.)
Allowable Memory Configurations
1 GB through 16 GB installed in quads of 256
MB DIMMs to 2 GB DIMMs
1 GB through 32 GB installed in quads of 256
MB DIMMs to 2 GB DIMMs
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