Architecting a vCloud Availability for vCloud Director Solution : vRealize Orchestrator Configuration : 7.2 In-the-Cloud Deployment
   
7.2 In-the-Cloud Deployment
Tenant deploys vRealize Orchestrator in the provider cloud (Organization VDC). This can be simplified by the provider who can offer a pre-installed vRealize Orchestrator template with an already included vSphere Replication plug-in in the public catalog. The tenant must decide if they will connect the cloud-based vRealize Orchestrator only to cloud endpoint or to its own vCenter Server as well. Providing connectivity to the tenant’s on-premises vCenter Server requires either usage of a direct connect network or an IPsec VPN.
If vRealize Orchestrator does not have connectivity to the on-premises vCenter Server, it can be used only for failover purposes during disaster recovery situation. The following workflows are then available:
Run Real Recovery to Cloud
Run Test Recovery at the Cloud Site
Run Test Cleanup at the Cloud Site
Summary:
Tenant self-service use case
Complex networking setup if vCenter Server access is required (for full configuration and management functionality)
Can be used during complete loss of tenant data center