Failover and Load Balancing

jitsi load balancing works nicely, there is single JVS (server) node and many JVB (video bridges) nodes behind that. So if one of JVB nodes down - system will work.
But what if JVS node will be down? It seems like JVS node is single point of failure here.

Should we make clone of JVS node with identical configuration (JVS2 ?) which will be use if JVS1 is down?

What is recommended way of configuration with out any single point of failure?