>>IIRC Stratus had 4 processors per CPU, organized as two pairs which
>>kept checks on each other.  If they disagreed, they both died and let
>>the other pair get on with it.
>
>And if you had the right support contract, the system would dial up
>Stratus and order a new part. You would receive it by next day air.

that reminds me of a story (urban legend?) i once heard where the
machine determined that the phone call would be long distance and
popped up a dialog box (or the equivalent) to verify that it was okay
to make the call.

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