I understand, it's a confusing landscape. To answer the basic question about snapshots, no that's not possible.
The MSA supports the following through VAAI:
* Full Copy or Hardware Assisted Move
* Block Zeroing or Hardware Assisted Zeroing
* Hardware Assisted Locking or Atomic Test and Set (ATS)
However, OneView for VMware vCenter (OV4VC), does provide additional features, including creating, expanding, and deleting a datastore.
The QuickSpecs has a summary and includes some links, here: http://h20195.www2.hpe.com/v2/redirect.aspx?/products/quickspecs/15935_div/15935_div.PDF
