It's too complex without additional networking infrastructure. They have a 3-node system and appliances available. I'm sure @KOOLER can comment.
From the previous implementation i recon that they offer an option of 3-way replication between all of the hosts, or the configuration of 2-way mirrors between each of the participants.
Since they are all daisy-chained no additional networking is required in either 2 or 3 node configurations.