A "mission critical" system must be stable and have the confidence of management and the user community. Like a valuable employee, the system must be counted on each and every day.

The stability of a system is attributed to a combination of both the hardware configuration and the software configuration. If any of our customers were asked how long it has been since there was an interruption in system availability, most, if not all, would not remember. It is not unusual for our customers to experience years between interruptions in system availability.