How many licensees are required for scribe insight installation on load balancing/failover servers configuration?

We are planning to install Scribe insight in load balancing/failover servers. One will be primary and another will be failover server. The scribe will always be running on one server at any point of time. I mean, primary server during normal operation and switch to failover server when primary server fails. As per load balancing installation guide, both would be sharing same collaboration DTS packages, database and messages.

Can anyone let us know how many license needs to be procured for load balance on two servers? Is it two license or just one is good enough?


(1) Answer