Lenovo HR650X V2 - Page 97

Table 12. Independent mode with one processor (DIMMs with same capacity)
Configura-
tion
Processor 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 DIMM 3
2 DIMMs 3 14
4 DIMMs 3 7 10 14
6 DIMMs 1 3 7 10 14 16
8 DIMMs 1 3 5 7 10 12 14 16
12 DIMMs 1 3 4 5 7 8 9 10 12 13 14 16
16 DIMMs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
With two processors
The following table shows the sequence of populating memory modules (with the same capacity) for
independent mode when two processors (Processor 1 and Processor 2) are installed.
Table 13. Independent mode with two processors (DIMMs with same capacity)
Configura-
tion
Processor 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
2 DIMMs 3
4 DIMMs 3 14
8 DIMMs 3 7 10 14
12 DIMMs 1 3 7 10 14 16
16 DIMMs 1 3 5 7 10 12 14 16
24 DIMMs 1 3 4 5 7 8 9 10 12 13 14 16
32 DIMMs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Configura-
tion
Processor 1
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
2 DIMMs 19
4 DIMMs 19 30
8 DIMMs 19 23 26 30
12 DIMMs 17 19 23 26 30 32
16 DIMMs 17 19 21 23 26 28 30 32
24 DIMMs 17 19 20 21 23 24 25 26 28 29 30 32
32 DIMMs 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Mirroring mode
Memory-mirroring mode provides full memory redundancy while reducing the total system memory capacity
in half. Memory channels are grouped in pairs with each channel receiving the same data. If a failure occurs,
the memory controller switches from the DIMMs on the primary channel to the DIMMs on the backup
channel. The DIMM installation order for memory mirroring varies based on the number of processors and
DIMMs installed in the server.
Chapter 4. Hardware replacement procedures 89