Product : VMware, vSAN [SDS]/6.7 U1, ROBO Ent
Feature : Stretched Cluster (SC), Disaster Recovery, Data Availability
Content Owner:  Herman Rutten
Summary
VMware vSphere: Yes (certified)
Details
There is read-locality in place preventing sub-optimal cross-site data transfers.

The Stretched Cluster feature is only available in the Enterprise edition of vSAN.