Requirements for the Mainframe

Dr. Martin Schmatz currently teaching z system architecture lessons during Mainframe intensive course at the University of applied science in Lucerne made the following statement:

“For me as a member of IBM HW research the requirement for the Mainframe is very simple: The probability for a HW failure which results in a user noticeable error must be smaller then the probability that of an meteorite falls on the Mainframe!”

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