The image shows shows how you can deploy custom VMware vSAN stretched clusters across multiple OCI regions.

The high-level topology consists of:

• Primary Site: Oracle Cloud VMware Solution SDDC deployed in OCI Dedicated Region A.
• Secondary Site: Oracle Cloud VMware Solution SDDC deployed in OCI Dedicated Region B.
• Witness Site: A regionally separate location for deploying the VMware vSAN Witness Appliance in Region C.

Communication across these sites is established through OCI’s private backbone and OCI FastConnect, both of which are mandatory to meet the low-latency and high-bandwidth requirements of a stable VMware vSAN stretched cluster.