Lenovo HR650X V2 User Manual page 97

Table 12. Independent mode with one processor (DIMMs with same capacity)
Configura-
tion
1 2
1 DIMM
2 DIMMs
4 DIMMs
6 DIMMs 1
8 DIMMs 1
12 DIMMs 1
16 DIMMs 1 2
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
1 2
2 DIMMs
4 DIMMs
8 DIMMs
12 DIMMs 1
16 DIMMs 1
24 DIMMs 1
32 DIMMs 1 2
Configura-
tion
17 18
2 DIMMs
4 DIMMs
8 DIMMs
12 DIMMs 17
16 DIMMs 17
24 DIMMs 17
32 DIMMs 17 18
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.
3 4 5 6
3
3
3
3
3 5
3 4 5
3 4 5 6
3 4 5 6 7
3
3
3 7
3 7
3 5 7
3 4 5 7
3 4 5 6 7
19 20 21 22 23
19
19
19 23
19 23
19 21 23
19 20 21 23
19 20 21 22 23
Processor 0
7 8 9 10
7 10
7 10
7 10
7 8 9 10
7 8 9 10
Processor 0
8 9 10
10
10
10
8 9 10
8 9 10
Processor 1
24 25 26
26
26
26
24 25 26
24 25 26
Chapter 4
11 12 13 14
14
14
14
12 14
12 13 14
11 12 13 14
11 12 13 14
14
14
14
12 14
12 13 14
11 12 13 14
27 28 29 30
30
30
30
28 30
28 29 30
27 28 29 30
.
Hardware replacement procedures
15 16
16
16
16
15 16
15 16
16
16
16
15 16
31 32
32
32
32
31 32
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