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Installation order: memory sparing with three processors

Memory module installation order for memory sparing with three processors installed in the server.

The following tables show the DIMM population sequence for memory sparing when three processors are installed.

  • Processors 1 and 2 are installed in the lower system board of the lower compute tray.

  • Processor 3 is installed in the upper system board of the lower compute tray or in the upper compute tray (processor slot 4)

Note
An even number of DIMMs is required for memory sparing.
Table 1. Memory sparing with three processors (Processors 1 and 2, 6 to 24 total DIMMs installed in server)
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
6 78 19206
8    56 78           1920    8
1056 781718 192010
12    56 78        1718 1920    12
1456 789101718 192014
16    56 78910      1718 19202122  16
1856 789101718 1920212218
20  3456 78910      1718 19202122  20
223456 7891015161718 1920212222
24345678910151617181920212224

Related DIMM population sequences for three processor systems:

  • Processor 1 and 2 DIMM population sequences for 26 to 48 DIMMs, see Table 2.

  • To continue populating processor 3 DIMMs for a system with 6 to 24 DIMMs, see Table 3.

Table 2. Memory sparing with three processors (Processors 1 and 2, 26 to 48 total DIMMs installed in server)
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
263456 78910111215161718 1920212226
28  3456 789101112  15161718 19202122232428
303456 78910111215161718 19202122232430
32  3456 789101112  15161718 19202122  32
343456 78910111215161718 19202122232434
36123456 789101112131315161718 19202122232436

Related DIMM population sequences for three processor systems:

  • Processor 1 and 2 DIMM population sequences for 6 to 24 DIMMs, see Table 1.

  • To continue populating processor 3 DIMMs for a system with 26 to 48 DIMMs, see Table 4.

Table 3. Memory sparing with three processors (Processor 3, 6 to 24 total DIMMs installed in server)
TotalProcessor 3 slot is emptyProcessor 4 slot (Processor 3)Total
DIMMs123456 789101112131415161718 192021222324DIMMs
6  19206
8                    1920    8
10  192010
12                 1718 1920    12
14 1718 192014
16                 1718 1920    16
18 1718 1920212218
20                 1718 19202122  20
22 1718 1920212222
24151617181920212224

Related DIMM population sequences for three processor systems:

  • Processor 3 population sequence for systems with 26 to 48 DIMMs, see Table 4.

  • To continue populating processor 1 and 2 DIMMs for a system with 6 to 24 DIMMs, see Table 1.

Table 4. Memory sparing with three processors (Processor 3, 26 to 48 total DIMMs installed in server)
TotalProcessor 3 slot is emptyProcessor 4 slot (Processor 3)Total
DIMMs123456 789101112131415161718 192021222324DIMMs
26 15161718 1920212226
28               15161718 19202122  28
30 15161718 19202122232430
32               15161718 19202122232432
34 15161718 19202122232434
36             131415161718 19202122232436

Related DIMM population sequences for three processor systems:

  • Processor 3 DIMM population sequence for 6 to 24 DIMMs, see Table 3.

  • To continue populating processor 1 and 2 DIMMs for a system with 26 to 48 DIMMs, see Table 2.