Does the Kie execution server (or the Drools server) support high availability?

Question

I am new to Drools. For a powerful merge or merge with a timer, most of them are states. Thus, the obvious problem arises: if the session server with the state is down, is it possible to restore the session with the Kie execution server?

For example, I run a timer rule (int: 30s), but the server hosting ksession disconnects after 15 seconds. How to restore it?

I read some blogs, for example:

http://mswiderski.blogspot.com/2016/04/kie-server-clustering-and-scalability.html

http://planet.jboss.org/post/unified_kie_execution_server_part_1

I also read a little about VFS Clustering in an white paper. But I'm still confused, is there an easy way to get my solution?

Thank,