What effect does VSAN technology have on typical capacity planning for a storage network?

What effect does VSAN technology have on typical capacity planning for a storage network?

A.
Because of the complete isolation of VSANs, more ports are required in a VSAN environment than in a non-VSAN environment.

B.
When capacity planning where VSANs will be implemented, each VSAN must be capacity planned independently of all other VSANs.

C.
VSANs are over provisioned separately to provide for capacity growth.

D.
Unused ports can easily be redeployed for other applications in other VSANs.