> does this mean that 1 CPU can have 224 Core or the system board must have 8  physical sockets for CPU? No, for 224 cores to be implemented, it is needed to build with 8 CPUs (sockets) As for intel processor, VxRail can support up to 2 socket per node at maximum. It is because VxRail uses R750 or R650 server for 15G PowerEdge model. You can see which model of PowerEdge server can have how many CPUs/Cores by referring to below doc. Dell-EMC-PowerEdge-Rack-Servers-Quick-Reference-Guide.pdf  
VxRail is a multi-node vSAN based cluster architecture and efficient, and the sphere scheduler will assign CPU requirements.Are there any advantages of choosing 1 CPU VxRail Model vs. 2 CPU model? I would appreciate it if someone gave some advantages for a 2 CPU model.
1 CPU vs 2 CPU