Assess and categorize the availability requirements for the sets of application planned for deployment on Cloud Foundation on VxRail.
- If a primary objective is protection from a site-level failure with no loss of service, stretching the vSAN datastore in the VxRail cluster between sites is an option. In this configuration, synchronous I/O is supported for the virtual machines operating in the Cloud Foundation domains where a VxRail vSAN stretched cluster is present. However, there are strict latency requirements for the network between the sites, and this option requires a third site for a ‘witness’ to monitor the stretched vSAN datastore.
- Determine the operational recovery and disaster recovery objectives of the application sets planned for Cloud Foundation on VxRail. Certain application sets can then be placed in VI workload domains configured to support these objectives.