In vRanger 5.4, only one Virtual Appliance is required per cluster. This is only valid if you are replicating between two clusters or replicating between
a cluster and a host.
If you are replicating between hosts in a cluster, it is required to have a virtual appliance deployed to each host.
If one virtual appliance is used, replications will work, but it is not recommended.
Replicating using only one virtual appliance will use twice the resources and may impact the host that it is deployed on - as stated in the warning at the last step of the replication wizard
Deploy a virtual appliance on each host.
How to Deploy a Virtual Appliance is covered in another Video KB: https://support.quest.com/Search/SolutionDetail.aspx?id=SOL92084
