You can stretch a cluster in the management domain or in a VI workload domain across two availability zones.
This section describes how to stretch an NSX for vSphere cluster. To stretch an NSX-T cluster, see Deployment of VMware NSX-T Workload Domains with Multiple Availability Zones for VMware Cloud Foundation.
- Planned maintenance
You can perform a planned maintenance on an availability zone without any downtime and then migrate the applications after the maintenance is completed.
- Automated recovery
Stretching a cluster automatically initiates VM restart and recovery, and has a low recovery time objective for the majority of unplanned failures.
- Disaster avoidance
With a stretched cluster, you can prevent service outages before an impending disaster such as a hurricane or rising flood levels.