Lenovo System x3850 X6 and x3950 X6 Quick Start Guide
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Table 2 shows the memory layout.
Table 2 Memory layout
Table 3 shows the Independent mode population sequence.
Table 3 Independent mode population sequence
Table 4 shows the Lockstep (RAS) mode population sequence.
Table 4 Lockstep (RAS) mode population sequence
CPU memory channel
DDR3 channel
DIMM number
DDR3 slot number
Channel 0
DDR3 Channel 0
9, 8, 7
0, 1, 2
DDR3 Channel 1
15, 14, 13
0, 1, 2
Channel 1
DDR3 Channel 0
19, 20, 21
0, 1, 2
DDR3 Channel 1
1, 2, 3
0, 1, 2
Channel 2
DDR3 Channel 0
6, 5, 4
0, 1, 2
DDR3 Channel 1
24, 23, 22
0, 1, 2
Channel 3
DDR3 Channel 0
16, 17, 18
0, 1, 2
DDR3 Channel 1
10, 11, 12
0, 1, 2
Installation
Population sequence
DIMM number
DDR3 slot number
1st
1
SMI0, Channel0, Slot0
Front
2nd
2
SMI2, Channel0, Slot0
Front
3rd
3
SMI1, Channel1, Slot0
Front
4th
4
SMI3, Channel1, Slot0
Front
5th
5
SMI0, Channel1, Slot0
Back
6th
6
SMI2, Channel1, Slot0
Back
7th
7
SMI1, Channel0, Slot0
Back
8th
8
SMI3, Channel0, Slot0
Back
...
9 - 16
Repeat order, move to Slot1
Four front, four back
...
17 - 24
Repeat order, move to Slot 2
Four front, four back
Installation
Population sequence
Controller location
Physical location
1st
1 & 2
SMI0, Channel0, Slot0 & SMI0, Channel1, Slot0
Front & back
2nd
3 & 4
SMI2, Channel0, Slot0 & SMI2, Channel1, Slot0
Front & back
3rd
5 & 6
SMI1, Channel1, Slot0 & SMI1, Channel0, Slot0
Front & back
4th
7 & 8
SMI3, Channel1, Slot0 & SMI3, Channel0, Slot0
Front & back
5th
9 & 10
Repeat order, move to Slot1
Front & back
6th
11 & 12
Repeat order, move to Slot1
Front & back
7th
13 & 14
Repeat order, move to Slot1
Front & back