Lumira installation in distributed environment

Hi Experts,

We have 4 windows servers and on all 4 servers, BIP are installed.

Installed lumira on all 4 servers (all features of lumira on all 4 servers).

Now, RESTful service has url of only one server. (in all 4 installation). In case if this server goes down (server which is being used by lumira ), how can I make use of other 3 servers so that if one server goes down, I can use other 3 servers for RESTFul.

we also have on load balancer.

Thanks

DK