System health check

The avoid any problems, but also to help in trouble shooting in the case of problems, the health of the observing system critical computers should both be monitored and reported independently of any (resulting) problems with applications. Likewise, the health of the network should both be monitored and reported independently of its usage so we would get an error from the network about a link not functioning. We are currently looking what system(s) to use, and how to implement this.