Hi Ano,
you should be able to set up the Clustering from the appliance level in that case.
You need to make sure that you do the cluster connection over a different NIC than your live interfaces. According to the documentation, bonded interfaces on a VM will not do you any good. The following picture shows a HW-based setup with bonded interfaces. In your case, you wouldn’t use bonded interfaces. You will still need to setup a cluster IP. In the distributed setup, your master will connect to the slaves via the cluster ip. Please keep in mind - the actual monitoring will still be issued by the “original” IPs and not by the cluster.
If you set it up likewise, the clustered appliance will take over in case of trouble. you do not have to manually sync things around.
I like pictures - they say more than thousand sentences 