Nutanix Disaster Recovery allows for failing over virtual machines between sites with different network configurations. The Recovery Plan is the orchestration entity where you define how VMs are recovered. A key feature within the Recovery Plan is Network Mapping, which allows an administrator to map a source network (at the production AZ) to a different target network (at the recovery AZ). During failover, the recovered VMs' network interface cards (NICs) are automatically connected to the specified target network.

A. A local-only schedule in the protection policy: Local schedules are for creating snapshots that remain at the primary site and are not replicated; they are irrelevant to failover networking at a remote site.

B. A new protection policy with synchronous replication: The replication type (synchronous, nearsync, or async) determines the RPO but does not solve the issue of mismatched network subnets between sites.

D. A required matching subnet name at the recovery AZ: While possible, it is not a requirement. The system is designed to handle dissimilar network configurations through explicit network mapping in the recovery plan.

1. Nutanix Disaster Recovery Guide v6.8, "Creating a Recovery Plan" section. The guide details the steps for configuring a recovery plan, including "Specify Network Mappings for Recovery AZ". It states: "You can create new mappings or use existing network mappings for the source and recovery AZs."

2. Nutanix University, "Nutanix Business Continuity and Disaster Recovery (NCP-BC) 6.5" courseware, Module 4: Nutanix Disaster Recovery. The module explains that network mappings in a recovery plan are used to connect VMs to appropriate networks at the recovery site, which may be different from the source site.