VMware recommends a few best practices to be followed while using the service.

Replication datapath requires CGW to be deployed via HCM. Ensure that the firewall requirements for CGW are met.

CGW tunnel should be up and active while configuring virtual machines replications.

Virtual machines recovery should be enforced via the Dedicated Disaster Recovery UI.

Use allocation pool as allocation model for Dedicated Disaster Recovery-enabled VDCs, which will allow you to scale up more virtual machines.

You need to associate a virtual machine with a stretched network before initiating replication if you want to later recover it over a stretched network.