Dell PowerEdge E05S Owner's Manual page 94

To support memory sparing, all eight DIMM sockets of each CPU must be
populated. When enabled, memory sparing allocates and reserves one rank of
memory from the installed DIMMs and is large enough to act as spare
memory in the event of a memory rank failure where the contents of the
failed rank is copied to the spared rank.
Table 3-2. Memory Configurations (Two Processors)
NOTE:
DIMMs A1–A8 are assigned to processor 1, DIMMs B1–B8 are assigned to
processor 2, and so on.
8 8 1
16 8 2
16 8 2
32 16 2
32 16 2
64 16 4
a
96 16 8 and 4 RDIMM
128 16 8
a. Eight 8 GB DIMMS are populated in slots A1–A8 and eight 4 GB DIMMS are populated in slots
B1–B8.
94
Installing System Components
RDIMM x8
UDIMM x8
RDIMM x8
UDIMM x8
RDIMM x8
RDIMM x4
x4
RDIMM x4
Processors
1
A1,A2,A3,A4
A1,A2,A3,A4
A1,A2,A3,A4
A1,A2,A3,A4,A5,A6,
A7,A8
A1, A2, A3, A4,
A5,A6,A7,A8
A1,A2,A3,A4,A5,A6,
A7,A8
A1,A2,A3,A4,A5,A6,
A7,A8
A1,A2,A3,A4,A5,A6,
A7,A8
2
B1,B2, B3,B4
B1,B2, B3,B4
B1,B2, B3,B4
B1,B2,B3,B4,B5,B6,
B7,B8
B1,B2,B3,B4,B5,B6,
B7,B8
B1,B2,B3,B4,B5,B6,
B7,B8
B1,B2,B3,B4,B5,B6,
B7,B8
B1,B2,B3,B4,B5,B6,
B7,B8