Installation order: memory mirroring with four processors

Memory module installation order for memory mirroring with four processors installed in the compute node.

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

Note: When adding one or more DIMMs during a memory upgrade, you might need to move other DIMMs that are already installed to new locations.
Table 1. Memory mirroring with four processors (Processors 1 and 2, 8 to 48 total DIMMs installed in compute node)
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
8 3 5   15 17   8
16     3   5     8   10         15   17     20   22     16
24 1 3 5   8 10 12 13 15 17   20 22 24 24
32     3 4 5 6 7 8 9 10         15 16 17 18   19 20 21 22     32
48 1 2 3 4 5 6   7 8 9 10 11 12 13 14 15 16 17 18   19 20 21 22 23 24 48

Related DIMM population sequences for four processor systems:

Table 2. Memory mirroring with four processors (Processors 3 and 4, 8 to 48 total DIMMs installed in compute node)
Total Processor 3 Processor 4 Total
DIMMs 25 26 27 28 29 30   31 32 33 34 35 36 37 38 39 40 41 42   43 44 45 46 47 48 DIMMs
8   32 34   44 46 8
16     27   29       32   34         39   41     44   46     16
24 25 27 29   32 34 36 37 39 41   44 46 48 24
32     27 28 29 30 31 32 33 34         39 40 41 42   43 44 45 46     32
48 25 26 27 28 29 30   31 32 33 34 35 36 37 38 39 40 41 42   43 44 45 46 47 48 48

Related DIMM population sequences for four processor systems: