Engineers learn early that redundancy is the road to the reliability demanded of broadcast facilities. But is this always true or sometimes even possible? Each layer of the broadcast facility infrastructure (power, IT, environment, interconnect, control, processing, communications, monitoring, command and control, etc.) can be assembled in various configurations, with calculable and predictable impacts on the overall availability of the facility. For every engineer who has ever been asked to plan his/her next outage, or knew intuitively that a spare needed to be budgeted, this tutorial covers how to apply the statistical analysis of system availability to the design, operation, and budgeting of a broadcast facility.