The following are minimum requirements for High Availability:
Two host machines, one for the primary host and one for the backup host.
Both hosts must be configured such that the RTView processes on each host can connect to each other via socket.
Both hosts must be able to access:
the same data connections
the same historian database
the alert threshold database
The RTView processes on both hosts must be able to run against identical properties files. In the case where drivers or other third party jars are located in different directories on the two hosts, create a directory in the same location in each host, copy the jar files into and reference that directory in your properties.
Tomcat or other Application Server that can access both the primary host and backup host.