Lenovo ThinkAgile VX3720 7Y12 User Manual page 80

Figure 42. Location of the DIMM connectors on the system board
Installation order
Memory modules must be installed in a specific order based on the memory configuration that you
implement on your node.
The following memory configurations are available:
• "Memory mirroring population sequence" on page 76
• "Memory rank sparing population sequence" on page 77
• "Independent memory mode population sequence" on page 76
Independent memory mode population sequence
Table 20. DIMM installation sequence (Independent mode/normal mode)
Number of processor
Processor 1 installed
Processor 1 and 2 installed
Memory mirroring population sequence
Table 21. DIMM installation sequence (mirror mode/lockstep mode)
Number of processors
Processor 1 installed
Processor 1 and 2 installed
If you are installing 3, 6, 9 or 12 identical DIMMs for the mirroring mode, comply with the following installation
sequence to achieve the best performance.
Table 22. DIMM installation sequence (mirror mode/lockstep mode for 3, 6, 9 and 12 identical DIMMs)
Number of processors
Processor 1 installed
Processor 1 and 2 installed
76
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Installation sequence (connectors)
6, 3, 7, 2, 8, 1, 5, 4
6, 14, 3, 11, 7, 15, 2, 10, 8, 16, 1, 9, 5, 13, 4, 12
Installation sequence (connectors)
(6, 7), (2, 3), (8, 1)
(6, 7, 14, 15), (2, 3), (10, 11), (1,8), (9, 16)
Installation sequence (connectors)
(6, 7, 8), (1, 2, 3)
(6, 7, 8), (14, 15, 16), (1, 2, 3), (9, 10, 11)