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Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)
SUPPLEMENTAL MATERIAL
51
Recommended Memory Configuration
This section explains the recommended DIMM population order rules for the C220 M3 server.
■ All DIMMs must be DDR3 DIMMs.
■ Do not mix:
— DIMMs with different sizes or clock rates in a bank
— RDIMMs and LRDIMMs
— ECC and non-ECC DIMMs
■ There are blue and black DIMM slots. Populate blue slots first.
■ When single- and dual-rank DIMMs are populated for 2DPC, always populate the dual-rank
DIMM in the blue DIMM slot and the single-rank DIMM in the black DIMM slot.
Many memory configurations are possible. For best results, follow Table 27 when populating DIMMs.
Table 27 Recommended Memory Configurations
Total
System
Memory
Size
CPU 1 DIMMs CPU 2 DIMMs
DIMM Max
Operating
Speed
(MHz)
Total
DIMMs in
the
System
1
Blue Slots
Bank 1
(A1, B1,
C1, D1)
Black Slots
Bank 2
(A2, B2,
C2, D2)
Blue Slots
Bank 1
(E1, F1,
G1, H1)
Black Slots
Bank 2
(E2, F2,
G2, H2)
32 GB
4x4 GB — 4x4 GB — 1600 8
2x8 GB — 2x8 GB — 1600 4
64 GB
4x4 GB 4x4 GB 4x4 GB 4x4 GB 1600 16
4x8 GB — 4x8 GB — 1600 8
1x32 GB — 1x32GB — 1600 2
96 GB
4x8 GB 2x8 GB 4x8 GB 2x8 GB 1600 12
3x16 GB — 3x16 GB — 1600 6
4x8 GB 4x4 GB 4x8 GB 4x4 GB 1600 16
1x32 GB 1x16 GB 1x32 GB 1x16 GB 1600 4
128 GB
4x8 GB 4x8 GB 4x8 GB 4x8 GB 1600 16
4x16 GB — 4x16 GB — 1600 8
1x32 GB 1x32GB 1x32 GB 1x32GB 1600 8