For vSAN stretched cluster functionality on VxRail, vSphere Distributed Resource Scheduler (DRS) is required. DRS provides initial placement assistance, and automatically migrates virtual machines to the corrected site in accordance with the Host and VM affinity rules. It can also help relocate virtual machines to their correct site when a site recovers after a failure.
Note: We support vSAN stretched clusters with vSphere Standard Edition. vSphere Enterprise plus is required for DRS.