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Installation order: memory sparing with two processors

Memory module installation order for memory sparing with two processors installed in the compute node.

The following table shows the DIMM population sequence for memory sparing when two processors are installed.

Note

  • An even number of DIMMs is required for memory sparing.

  • There are two tables for memory sparing mode with two processors:

    • For single rank (1R) memory: Table 1

    • For dual (2R) or higher rank memory: Table 2

Table 1. Memory sparing with two processors for single rank (1R) memory
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
456 1718 4
8    5678        17181920    8
123456 7815161718 192012
16  345678910    1516171819202122  16
20123456 78910131415161718 1920212220
2412345678910111213141516171819202122232424
Table 2. Memory sparing with two processors for dual (2R) or higher rank memory
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
25172
4    5   8        17   20    4
63581517206
8  3 5   8 10    15 17   20 22  8
10135810131517202210
121 3 5   8 10 1213 15 17   20 22 2412
143456810121516171820222414
16  3456 78910    15161718 19202122  16
181234568101213141516171820222418
20123456 78910  131415161718 19202122  20
221234567891012131415161718192021222422
24123456 789101112131415161718 19202122232424