You can use VMware Virtual SAN storage with Site Recovery Manager and vSphere Replication.

Site Recovery Manager 6.1 supports vSphere Replication 6.1 with Virtual SAN 6.1. You cannot use Virtual SAN storage with array-based replication.

For information about using vSphere Replication with Virtual SAN, see Using vSphere Replication with Virtual SAN Storage in vSphere Replication Administration.