Lenovo ThinkSystem SR950 Setup Manual page 126

Installation order: memory mirroring with eight processors
Memory module installation order for memory mirroring with eight processors installed in the server.
The following tables show the DIMM population sequence for memory mirroring when eight 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.
• Processors 5 and 6 are installed in the lower system board of the upper compute tray.
• Processors 7 and 8 are installed in the upper system board of the upper compute tray.
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 99. Memory mirroring with eight processors (Processors 1 and 2, 16 to 24 total DIMMs installed in server)
Total
DIMMs 1 2 3 4
16
17
18
19
20
21
22
23
24
Related DIMM population sequences for eight processor systems:
• Processor 1 and 2 DIMM population sequences:
– Table 100 "Memory mirroring with eight processors (Processors 1 and 2, 25 to 48 total DIMMs installed
in server)" on page 123
– Table 101 "Memory mirroring with eight processors (Processors 1 and 2, 49 to 72 total DIMMs installed
in server)" on page 124
– Table 102 "Memory mirroring with eight processors (Processors 1 and 2, 73 to 96 total DIMMs installed
in server)" on page 125
• To continue populating DIMMs for a system with 16 to 24 DIMMs:
– Table 103 "Memory mirroring with eight processors (Processors 3 and 4, 16 to 24 total DIMMs installed
in server)" on page 126
– Table 107 "Memory mirroring with eight processors (Processors 5 and 6, 16 to 24 total DIMMs installed
in server)" on page 130
– Table 111 "Memory mirroring with eight processors (Processors 7 and 8, 16 to 24 total DIMMs installed
in server)" on page 134
ThinkSystem SR950 Setup Guide
122
Processor 1
5 6 7 8 9 10 11 12
8 10
8 10
8 10
8 10
8 10
8 10
8 10
8 10
8 10
Processor 2
13 14 15 16 17 18 19 20 21 22 23 24 DIMMs
12
12
12
12
12
12
12
12
Total
20 22
16
20 22
17
20 22 24
18
20 22 24
19
20 22 24
20
20 22 24
21
20 22 24
22
20 22 24
23
20 22 24
24