The following table shows the vSAN licensing editions that support various features and functions on a vSAN 2-node cluster:
Table 2. vSAN licensing
While vSAN ROBO licenses are supported for VxRail vSAN 2-node clusters, these licenses are not orderable through VxRail. A witness appliance license is not required, but the host where the witness resides needs the appropriate vSphere license. For more information, see the VMware vSAN licensing guide.