IBM X3850 X6 - Page 88

72 IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
Table 3-7 DIMMs placement order
As shown in Table 3-7, in Mirroring mode DIMMs must be installed in pairs (minimum of one
pair per CPU). Both DIMMs in a pair must be identical in type and size.
Chipkill is supported only in RAS mode (Performance mode is not supported), and DIMMs
must be installed in a pair.
DIMM
installation
order
DIMM slots
Performance
Mode
Performance +
Mirroring
RAS Mode RAS + Mirroring
1 DIMM 9 DIMM 9, 19 DIMM 9, 15 DIMM 1, 9, 15, 19
2 DIMM 6 DIMM 6, 16 DIMM 6, 24 DIMM 6, 10, 16, 24
3 DIMM 1 DIMM 1, 15 DIMM 1, 19 DIMM 2, 8, 14, 20
4 DIMM 10 DIMM 10, 24 DIMM 10, 16 DIMM 5, 11, 17, 23
5 DIMM 15 DIMM 8, 20 DIMM 8, 14 DIMM 3, 7, 13, 21
6 DIMM 24 DIMM 5, 17 DIMM 5, 23 DIMM 4, 12, 18, 22
7 DIMM 19 DIMM 2, 14 DIMM 2, 20 Not applicable
8 DIMM 16 DIMM 11, 23 DIMM 11, 17
9 DIMM 8 DIMM 7, 21 DIMM 7, 13
10 DIMM 5 DIMM 4, 18 DIMM 4, 22
11 DIMM 2 DIMM 3, 13 DIMM 3, 21
12 DIMM 11 DIMM 12, 22 DIMM 12, 18
13 DIMM 14 Not applicable Not applicable
14 DIMM 23
15 DIMM 20
16 DIMM 17
17 DIMM 7
18 DIMM 4
19 DIMM 3
20 DIMM 12
21 DIMM 13
22 DIMM 22
23 DIMM 21
24 DIMM 18