Cisco UCS C220 M3 Spec Sheet page 19

(4) 2-CPU configuration with memory mirroring:
Select 2, 4, 6, or 8 identical DIMMs per CPU. The DIMMs will be placed by the factory as
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shown in the following table. Notice that DIMM placement is different for single-rank and
dual-rank DIMMs.
Number
of
DIMMs
per CPU
2
4
6 1
8
Notes . . .
1. Not recommended (for performance reasons)
Select the memory mirroring option (N01-MMIRROR) as shown in
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Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Large Form Factor Hard Disk Drive Model)
CPU 1 DIMM Placement in Channels
(for identical dual-rank DIMMs)
Blue Slots
(A1, B1)
(A1,B1); (C1,D1)
(A1,B1, C1);
(A1,B1); (C1,D1)
NOTE: System performance is optimized when the DIMM type and quantity are equal
for both CPUs, and when all channels are filled equally across the CPUs in the server.
CPU 2 DIMM Placement in Channels
Black Slots
—
— (E1,F1); (G1,H1)
(A2, B2, C2)
(A2,B2); (C2,D2) (E1,F1); (G1,H1)
CONFIGURING the SERVER
(for identical dual-rank DIMMs)
Blue Slots Black Slots
(E1, F1)
(E1,F1, G1); (E2, F2, G2)
(E2,F2); (G2,H2)
Table 4 on page
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—
17.
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