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.
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