I'm not sure if anyone is doing vSAN at that scale for business critical apps. IMHO, vSAN is capable; but are the resources around it capable? By resources I mean human and technical. You need every skill in the tool box to do vSAN, networking, storage, virtualization, server, etc... If the entire team is committed to software and commodity hardware as a base for infrastructure, go for it.
I might look at some of the EVO Rail solutions as a good balance between vSAN and traditional architecture. I like the Dell and EMC implementations.
Thank you, Zach.
