Prepare the network and NSX network devices in Region A. Then perform failback of vRealize Automation and vRealize Business, and of vRealize Operations Manager to Region A if Region B becomes unavailable in the event of a disaster.
Reconfigure the NSX Instance for the Management Cluster in Region A In the event of a site failure, when Region B becomes unavailable, prepare the network layer in Region A for failback of management applications. Change the role of the NSX Manager in Region A to primary, re-deploy the universal controller cluster, and synchronize the universal controller cluster configuration.
Recover the Control VM of the Universal Distributed Logical Router in Region A In the case of failback, because of the failure in Region B, dynamic routing in Region A is not available. Deploy a Control VM for the universal dynamic logical router sfo01m01udlr01 in Region A to recover dynamic routing in the environment. You then re-configure the recovered Control VM to provide dynamic routing for the SDDC management applications that are failed back.
Reconfigure the Universal Distributed Logical Router and NSX Edges for Dynamic Routing in Region A Configure the universal distributed logical router sfo01m01udlr01, and NSX Edges sfo01m01esg01 and sfo01m01esg02 to support dynamic routing in Region A before you start disaster recovery from Region B. In this way, the management components of the SDDC will continue to communicate using optimal routes in a fault-tolerant network.
Verify the Establishment of BGP for the Universal Distributed Logical Router in Region A Verify that the UDLR for the management applications is successfully peering, and that BGP routing has been established in Region A. After you perform failback for disaster recovery, they can continue communicating to keep SDDC operational.
Enable Network Connectivity for the NSX Load Balancer in Region A Enable the network connectivity on sfo01m01lb01 load balancer to support high-availability and distribute the network traffic load for vRealize Operations Manager and the Cloud Management Platform after disaster recovery to Region А.
Initiate Disaster Recovery of vRealize Operations Manager in Region A If a disaster event occurs in Region B, initiate the disaster recovery of vRealize Operations Manager in Region A to fail vRealize Operations Manager back to Region A.
Initiate Disaster Recovery of the Cloud Management Platform in Region A In the event of a disaster in Region B, initiate disaster recovery of vRealize Automation and vRealize Business in Region A to fail the Cloud Management Platform back to Region A.