Today the question was asked if VMware supports migrating a virtual machine with Storage vMotion between NFS and VMFS datastores.
Needing to convince someone that live storage vMotion between SAN->NAS is supported. Can only find marketing piece, anyone have a tech doc?
— Matt Vogt (@mattvogt) February 6, 2013
It appears no documentation is explicitly stating whether or not it is supported.
The official answer is Yes, VMware supports Storage vMotion between NFS and VMFS datastores. Please note that VAAI hardware offload is not leveraged as the data is moved between Filesystem and block based storage.