Non-Distributed HA

This is the simplest high availability (HA) installation. To configure your system like this, install the full application on two machines. In this scenario the application servers are clustered and mediation servers are configured for redundancy. Oracle RAC or replication produces database redundancy. Paired load-balancers / proxy servers direct web users to an available web server, and distribute web server traffic to an available application server, and mediation servers communicate with managed devices.