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Appendix B: Memory configuration options
160
DIMM population with sparing
The tables below list the suggested DDR2 DIMM module population
for memory sparing configuration.
Population with one memory board
* Only 4GB of memory installed in DIMM 1A/1B slots will be reserved as spare DIMMs, one
rank from each dual-rank DIMM.
Population with two memory boards
* Only 4GB of memory installed in DIMM 1A/1B slots will be reserved as spare DIMMs, one
rank from each dual-rank DIMM.
Memory board A Memory board B Memory board C Memory board D Total Memory
1A/1B 2A/2B 1A/1B 2A/2B 1A/1B 2A/2B 1A/1B 2A/2B
Physical
memory
Detected
by OS
2 x
512 MB
(Sparing)
2 x
512 MB 2 GB 1 GB
2 x 1 GB
(Sparing)
2 x 1 GB
4 GB 2 GB
2 x 2 GB
(Sparing)
2 x 2 GB
8 GB 4 GB
2 x 4 GB
(Sparing)*
8 GB 4 GB
2 x 4 GB
(Sparing)*
2 x 4 GB
16 GB 12 GB
Memory board A Memory board B Memory board C Memory board D Total Memory
1A/1B 2A/2B 1A/1B 2A/2B 1A/1B 2A/2B 1A/1B 2A/2B
Physical
memory
Detected
by OS
2 x
512 MB
(Sparing)
2 x
512 MB
2 x
512 MB
(Sparing)
2 x
512 MB 4 GB 2 GB
2 x 1 GB
(Sparing)
2 x 1 GB 2 x 1 GB
(Sparing)
2 x 1 GB
8 GB 4 GB
2 x 2 GB
(Sparing)
2 x 2 GB 2 x 2 GB
(Sparing)
2 x 2 GB
16 GB 8 GB
2 x 4 GB
(Sparing)*
2 x 4GB
(Sparing)*
2 x 4 GB
16 GB 8 GB
2 x 4 GB
(Sparing)*
2 x 4 GB 2 x 4GB
(Sparing)*
2 x 4 GB
32 GB 24 GB