Iterative TCP Unicast (i.e., message is sent to each the nodes individually over TCP) can be used instead of MSMQ UDP Multicast. In addition to the improved reliability of TCP, removing the dependence of UDP Multicast simplifies deployment on cloud infrastructures. Discovering of nodes can be accomplished using the shared storage (with file locking semantics) that EFT already requires.
An advanced property must be enabled to use Unicast.
HA support for environments that do not support MSMQ Broadcasting
Ability for HA to work in a vMotion environment
Improved support for node-out-of-sync detection and availability.