Before adding protected VMs using host-based replication DR technology, VRGs need to be paired for communication, providing a channel for using host-based replication to synchronize disk data.
At the production center, FusionSphere components on the DR management server and storage devices are running properly and can communicate normally.
In remote DR mode, two UltraVR Servers are deployed and VRG pairing can be performed on the DR management server at either the production or the DR center.