Datasheet

Cisco UCS C240 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)
CONFIGURING the SERVER
19
(4) 2-CPU configuration with memory mirroring:
■ Select 2, 4, 6, 8, or 12 identical DIMMs per CPU. The DIMMs will be placed by the factory as
shown in the following table.
■ Select the memory mirroring option (N01-MMIRROR) as shown in Tabl e 4 on page 17.
Number
of
DIMMs
per CPU
CPU 1 DIMM Placement in Channels
(for
identical DIMMs)
CPU 2 DIMM Placement in Channels
(for
identical DIMMs)
Blue Slots Black Slots Black Slots Blue Slots Black 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)
—
12
2
2. If this 3DPC configuration is implemented with quad-rank DIMMs (the 32 GB LR DIMM), the maximum DIMM
speed will be 1066 MHz, even though the DIMM is specified to operate at a higher speed.
(A1,B1);
(C1,D1)
(A2,B2);
(C2,D2)
(A3,B3);
(C3,D3)
(E1,F1);
(G1,H1)
(E2,F2);
(G2,H2)
(E3,F3);
(G3,H3)
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.