The VMware Validated Design for Software-Defined Data Center is a dual region data center design for geographically separated sites that can replicate asynchronously to provide regional fault domains. This design scales to support a large volume of workloads, can run workloads concurrently, and has the resources to support essential workloads if one region fails. You also can use VMware Validated Design for Software-Defined Data Center to deploy a single region data center without failover capabilities.