Cisco Cisco HyperFlex HX220c M4 Node Data Sheet

When considering the memory configuration of your system, you should consider the following items: 

■

Each channel has three DIMM slots (for example, channel A = slots A1, A2, and A3).

— A channel can operate with one, two, or three DIMMs installed.

— If a channel has only one DIMM, populate slot 1 first (the blue slot).

■

When both CPUs are installed, populate the DIMM slots of each CPU identically.

— Fill blue slots in the channels first: A1, E1, B1, F1, C1, G1, D1, H1

— Fill black slots in the channels second: A2, E2, B2, F2, C2, G2, D2, H2

— Fill black slots in the channels third: A3, E3, B3, F3, C3, G3, D3, H3

■

Any DIMM installed in a DIMM socket for which the CPU is absent is not recognized.

■

Observe the DIMM mixing rules shown in 

1. Although you can have different DIMM capacities in the same slot, this will result in less than optimal 

performance. For optimal performance, all DIMMs in the same slot should be identical.

DIMM Capacity
RDIMM = 16, 32, or 64 GB

DIMMs in the same channel (for 

example, A1, A2, and A3) can have 

different capacities.

For best performance, DIMMs in the 

same slot (for example, A1, B1, C1, 

D1) should have the same capacity.

DIMM Speed 
2133-MHz

2

2. Only 2133-MHz DIMMs are currently available for the HX220c M4 node.

DIMMs will run at the lowest speed 

of the DIMMs/CPUs installed

DIMMs will run at the lowest speed of 

the DIMMs/CPUs installed

DIMM Type
RDIMMs

See 

 for 

 

valid RDIMM 1 DPC, 2 DPC, and 3 DPC memory configurations