The cloud deployment architecture of vCloud Availability relies on symmetrical replication operations between cloud environments.
Test and Development Deployment
In a test and development environment, you can deploy the simplest architecture. In the cloud site, the vCloud Availability Tunnel service, the vCloud Availability Replication Manager and vCloud Availability vApp Replication Manager service, and the vCloud Availability Replicator service reside on a single vCloud Availability Combined Appliance.
The components with no color in the diagrams represent existing components in the VMware vCloud Director environments. The colored components represent the vCloud Availability services deployed during the installation and initial configuration. The color of the components indicates which services participate for each replication direction. The replication is always placed at the destination site, and a protection from Cloud Site 1 to Cloud Site 2 uses the Cloud Site 2 vCloud Availability services.
In a production environment, you deploy and configure a vCloud Availability Cloud Tunnel Appliance, a vCloud Availability Cloud Replication Management Appliance and one or more vCloud Availability Cloud Replicator Appliances.
Deploying Multiple vCloud Availability Instances in vCloud Director
In a production cloud site, you can deploy one or more vCloud Availability instances, distributed in provider virtual data centers (PVDC). A single vCloud Director instance manages all vCloud Availability instances, for both a replication source or a replication destination.
In vCloud Director, each vCloud Availability instance is registered as a plug-in with its local site name.
In vCloud Availability, each PVDC represents a cloud site and the replication traffic can transit directly and securely between each site. In each vCloud Availability instance, the service provider controls the accessible PVDC.