Component | Description |
VMware vCloud Director | Existing vCloud Director components consisting of multiple vCloud Director cells, vCloud Director database (VCD-SP DB), and vSphere (vCenter Server, ESXi hosts, datastores) and VMware NSX® resources. |
RabbitMQ | AMQP message broker that provides communication between vCloud Director and the other components that extend vCloud Director functionality. |
vSphere Replication Cloud Service | Tenant-aware replication manager that extends vCloud API with vCloud Availability for vCloud Director APIs and manages replications and failovers. |
Cassandra | Cassandra noSQL database cluster used for VM performance metrics and for replication metadata, and for configuration of vCloud Availability for vCloud Director infrastructure components. |
Cloud Proxy Cells | vCloud Director cell-like components whose purpose is to tunnel replicated traffic to and from the cloud and establish control connections with on-premises vSphere Replication Appliance. |
vCloud Availability Portal | Appliances that provide a tenant-level UI portal to manage replications in the cloud. |
vSphere Replication Manager Server | Management component that manages the replication process of tenant virtual machines. It has a 1:1 relationship with the cloud resource VMware vCenter Server® instances. |
vSphere Replication Server | Replication server that receives the replication data and records the changes for each replicated virtual machine. It has a 1:many relationship with cloud resource vCenter Server instances. |
vSphere Replication Appliance | On-premises vSphere Replication component that combines both manager and replication server functionality. It also contains the vCloud Tunneling Agent that terminates the to-cloud and from-cloud replication tunnels. vSphere Replication Appliance can be extended with deployment of additional vSphere Replication Server instances for scale. |
VMware Platform Services Controller™ | An external Platform Services Controller runs the lookup service necessary for discovery of vCloud Availability components (Cassandra nodes, vSphere Replication Manager Server, and vSphere Replication Cloud Service) and provides secure token service to authenticate replication solution users to vCloud Director. |