Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Large Form Factor Hard Disk Drive Model)
CONFIGURING the SERVER
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
shown in the following table. Notice that DIMM placement is different for single-rank and
dual-rank DIMMs.
■
Select the memory mirroring option (N01-MMIRROR) as shown in
Table 4 on page 17
.
Number
of
DIMMs
per CPU
CPU 1 DIMM Placement in Channels
(for identical dual-rank DIMMs)
CPU 2 DIMM Placement in Channels
(for identical dual-rank DIMMs)
Blue Slots
Black Slots
Blue Slots
Black Slots
2
(A1, B1)
—
(E1, F1)
—
4
(A1,B1); (C1,D1)
—
(E1,F1); (G1,H1)
—
6
1
Notes . . .
1. Not recommended (for performance reasons)
(A1,B1, C1);
(A2, B2, C2)
(E1,F1, G1);
(E2, F2, G2)
8
(A1,B1); (C1,D1)
(A2,B2); (C2,D2)
(E1,F1); (G1,H1)
(E2,F2); (G2,H2)
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.
