High Availability

High Availability simply means systems that never go down. This is achieved by having N+1 of everything, which means at least 1 more of each item than you need at a minimum. This is not an easy task, it takes special hardware, configuration, testing, monitoring and documentation to ensure that everything fails over automatically, and that once it does fail you are alerted of a problem.

To assist with your deployment, we've made an example diagram for you to follow.