Why vSAN does not use iSCSI, NFS, SMB ?

[npadmani]

2. What storage protocols does VSAN support?  E.g. iSCSI, NFS, etc.

As VSAN only communicates with vSphere virtual machines, there’s really no need for a standard storage protocol.  VSAN uses a proprietary protocol within the cluster that’s more efficient than the familiar choices.

Ref: http://blogs.vmware.com/virtualblocks/2015/05/29/20-common-vsan-questions/

All we know is that it uses a Proprietary protocol within the cluster. As it is mentioned in above blog post.

I have never seen any public document (perhaps, I might have missed) available mentioning more details about it.

[Naraena]

Thanks for kind explain npadmani.

Then,, it means each vSAN Host (Node or Server) does not connect directly. am I right ?

Can we see the Virtual SAN DataStore only at the Hypervisor(ESXi) stack?

vSAN does not support the RDMA yet. Does this (not support RDMA) related to this protocol policy?