Failover testing (FT):
  Verify of redundancy mechanisms while the application is under load. This is in contrast (compare to) to load tests which are conducted under anticipated load with no component failure is k.a., FT.

FT is mainly a server side validation. To perform this we need a cluster (Multiple servers are connected) environment setup.

Here we apply the load to the server and purposefully shut down few servers during testing to make sure the load is distrubuted to other active/running servers in the cluster setup. So that the end user can contineously use the s/w without getting the problem even when few servers goes down.

