8.1.1.5
Rank Sparing Mode (single rank (1R) and dual rank (2R) RDIMM
modules)
CPU
Channel
Slot descriptor
1A 2A 1B 2B 1C 2C
# DIMMS
2
1
4
1
6
1
4
1
6
1
8
1
10
1
12
1
I
All empty DIMM sockets must be fitted with dummy DIMMs. Once the
DIMM sockets have been fitted with DIMMs and dummy DIMMs, the air
cowl must be laid over the DIMM slots.
UDIMMs are not supported in Rank Sparing mode
Same numbers mean identical modules (capacity, rank).
BX920 S3
CPU 1
A
B
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Upgrade and Maintenance Manual
C
F
2F 1F 2E 1E 2D 1D
1 CPU populated
1
1 CPU populated
1
1
2
2
Main memory
CPU 2
E
D
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
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