Hi,
We are in the process of updating the white paper you have referred to as it mixes Gen4 and Gen5 at numerous points; in this case, the support for VASA. As Shawn says, the MSA does not support vVols, but Gen5 also lost the support for VASA, which is fine as it does not need it.
Gen4 supported rudimentary VASA using OV4VC as a provider, and for linear storage only.
Regards,
Ben