Lenovo RD120 manual Number of, DIMM connectors, Results, of DIMMs

In the configuration that you use, install the largest DIMMs first.

Table 6. Online-spare DIMM configurations, basic scheme

Number of
DIMMs	DIMM connectors	Results
4	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5
6	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5
	3 and 6
8	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5	Online-sparing on dual-rank DIMMs on
	3 and 6	branch 1
	7 and 10 (dual-rank DIMMs only)
10	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5	Online-sparing on branch 1
	3 and 6
	7 and 10
	8 and 11
12	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5	Online-sparing on branch 1
	3 and 6
	7 and 10
	8 and 11
	9 and 12

Table 7. Online-spare DIMM configurations, alternative scheme (requires BIOS code version 1.04 or later)

Number
of DIMMs	DIMM connectors	Results
4	7 and 10 (largest DIMMs)	Online-sparing on branch 1
	8 and 11
6	7 and 10 (largest DIMMs)	Online-sparing on branch 1
	8 and 11
	9 and 12
8	7 and 10 (largest DIMMs)	Online-sparing on branch 1
	8 and 11	Online-sparing on dual-rank DIMMs on
	9 and 12	branch 0
	1 and 4 (dual-rank DIMMs only)
10	1 and 4 (largest DIMMs)	Online-sparing on branch 0
	2 and 5	Online-sparing on branch 1
	7 and 10
	8 and 11
	9 and 12
12	N/A	N/A

64ThinkServer RD120 Types 6444, 6445, 6446, and 6447: User Guide