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
Total Processor 1 Processor 2 Total
DIMMs 1 2 3 4 5 6   7 8 9 10 11 12 13 14 15 16 17 18   19 20 21 22 23 24 DIMMs
4 5 6   17 18   4
8         5 6 7 8                 17 18 19 20         8
12 3 4 5 6   7 8 15 16 17 18   19 20 12
16     3 4 5 6 7 8 9 10         15 16 17 18 19 20 21 22     16
20 1 2 3 4 5 6   7 8 9 10 13 14 15 16 17 18   19 20 21 22 20
24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24
Table 2. Memory sparing with two processors for dual (2R) or higher rank memory
Total Processor 1 Processor 2 Total
DIMMs 1 2 3 4 5 6   7 8 9 10 11 12 13 14 15 16 17 18   19 20 21 22 23 24 DIMMs
2 5 17 2
4         5       8                 17       20         4
6 3 5 8 15 17 20 6
8     3   5       8   10         15   17       20   22     8
10 1 3 5 8 10 13 15 17 20 22 10
12 1   3   5       8   10   12 13   15   17       20   22   24 12
14 3 4 5 6 8 10 12 15 16 17 18 20 22 24 14
16     3 4 5 6   7 8 9 10         15 16 17 18   19 20 21 22     16
18 1 2 3 4 5 6 8 10 12 13 14 15 16 17 18 20 22 24 18
20 1 2 3 4 5 6   7 8 9 10     13 14 15 16 17 18   19 20 21 22     20
22 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 21 22 24 22
24 1 2 3 4 5 6   7 8 9 10 11 12 13 14 15 16 17 18   19 20 21 22 23 24 24