For each host_group statement in the original ADNR configuration, identify the subplexes that contain the hosts that are in the group. Create a host_group statement in each new ADNR configuration file of the subplex that contains such a host. Configure the zone_label of each host_group statement to point to a zone statement that represents the zone that will represent the subplex. Configure the dns_label of the host_group statement to point to a dns statement that represents the name server that owns the specified zone. Create ipaddrlist statements that the host_group statements can reference, such that the IP addresses in them belong to the subplex.
For each server_group statement in the original ADNR configuration, identify the subplexes that contain the server instances that are in the group. Create a server_group statement in each new ADNR configuration file of the subplex that contains such a server instance. Configure the zone_label of each server_group statement to point to a zone statement that represents the zone that will represent the subplex. Configure the dns_label of the host_group statement to point to a dns statement that represents the name server that owns the specified zone. Create ipaddrlist statements that the server_group statements can reference, such that the IP addresses in them belong to the subplex.