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Installation order: memory sparing with four processors

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

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

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

  • Processors 3 and 4 are installed in the upper system board of the lower compute tray or in the upper compute tray.

Note
An even number of DIMMs is required for memory sparing.
Table 1. Memory sparing with four processors (Processors 1 and 2, 8 to 24 total DIMMs installed in server)
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
8 78 19208
10    56 78           1920    10
1256 781718 192012
14    56 78        1718 1920    14
1656 781718 192016
18    56 78910      1718 1920    18
2056 789101718 1920212220
22    56 78910      1718 19202122  22
2456 789101718 1920212224

Related DIMM population sequences for four processor systems:

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

  • To continue populating processor 3 and 4 DIMMs for a system with 8 to 24 DIMMs, see Table 3.

Table 2. Memory sparing with four processors (Processors 1 and 2, 26 to 48 total DIMMs installed in server)
TotalProcessor 1Processor 2Total
DIMMs123456 789101112131415161718 192021222324DIMMs
263456 789101718 1920212226
28  3456 78910    15161718 19202122  28
303456 7891015161718 1920212230
32  3456 78910    15161718 19202122  32
343456 78910111215161718 1920212234
36  3456 789101112  15161718 19202122232436
383456 78910111215161718 19202122232438
40  3456 789101112  15161718 19202122232440
42123456 78910111215161718 19202122232442
44123456 789101112131415161718 19202122232444
46123456 789101112131415161718 19202122232446
48123456 789101112131415161718 19202122232448

Related DIMM population sequences for four processor systems:

  • Processor 1 and 2 DIMM population sequences for 8 to 24 DIMMs, see Table 1.

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

Table 3. Memory sparing with four processors (Processors 3 and 4, 8 to 24 total DIMMs installed in server)
TotalProcessor 3Processor 4Total
DIMMs123456 789101112131415161718 192021222324DIMMs
8 78 19208
10       78           1920    10
12 78 192012
14    56 78           1920    14
1656 781718 192016
18    56 78        1718 1920    18
2056 781718 192020
22    56 78910      1718 1920    22
2456 789101718 1920212224

Related DIMM population sequences for four processor systems:

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

  • To continue populating processor 1 and 2 DIMMs for a system with 8 to 24 DIMMs, see Table 1.

Table 4. Memory sparing with four processors (Processors 3 and 4, 26 to 48 total DIMMs installed in server)
TotalProcessor 3Processor 4Total
DIMMs123456 789101112131415161718 192021222324DIMMs
2656 789101718 1920212226
28    56 78910      1718 19202122  28
303456 789101718 1920212230
32  3456 78910    15161718 19202122  32
343456 7891015161718 1920212234
36  3456 78910    15161718 19202122  36
383456 78910111215161718 1920212238
40  3456 789101112  15161718 19202122232440
423456 78910111215161718 19202122232442
44  3456 789101112  15161718 19202122232444
46123456 78910111215161718 19202122232446
48123456 789101112131415161718 19202122232448

Related DIMM population sequences for four processor systems:

  • Processor 3 and 4 DIMM population sequences for 8 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.