I have deployed ArcGIS enterprise 10.8.1 and configured it for high availability. Everything is working well so far.
Machine 1 is running portal (primary), server, data store (primary), and 2 web adapters (portal and server)
Machine 2 is running portal (secondary), server, data store (secondary), and 2 web adapters (portal and server)
The two ArcGIS Server installations have been joined and are operating as one site which is federated with the portal using the load balancer url.
In the load balancer (KEMP), currently we only have heath checks configured for the portal machines, is it necessary to configure them for the server machines as well? It is clear from the documentation that this is required for the portals but I cant tell if we need it for the servers or not. I can understand why this would be necessary if the machines were separate sites but does the health check provide any advantage or additional functionality in this case with a single site?