Architecting VMware vSAN 6.2 : vSAN Design Overview : 5.6 vSAN Requirements : 5.6.4 Network Requirements : 5.6.4.2 Network Interface Cards (NIC)
   
5.6.4.2 Network Interface Cards (NIC)
In vSAN hybrid architectures, each vSphere host must have at least one 1-Gb Ethernet or 10-Gb Ethernet capable network adapter, although VMware recommends 10-GbE for production environments. The all-flash architectures are only supported with 10-Gb Ethernet capable network adapters.
For redundancy and high availability, a team of network adapters can be configured on a per-host basis. The teaming of network adapters for link aggregation to improve performance is not supported. However, the teaming of network adapters to provide increased availability is addressed in further detail later in this section. VMware considers this to be a best practice, but it is not necessary in building a fully functional vSAN cluster.