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- Path: sparky!uunet!think.com!trystro!czos9!chuck
- From: chuck@czos9.UUCP
- Newsgroups: comp.os.os9
- Subject: Re: Failsafe systems
- Keywords: NASA OS9
- Message-ID: <7@czos9.UUCP>
- Date: Fri, 20 Nov 92 14:35:29 EDT
- References: <kdarling.722249521@garfield.catt.ncsu.edu> <7YCD1H@keihh.hanse.de> <73@zog.UUCP> <23@narnia.UUCP>
- Distribution: world
- Lines: 27
-
- kdarling@garfield.catt.ncsu.edu (Kevin Darling) says:
- >Hi again :-)
- >
- >Does anyone have experience or thoughts on redundant-cpu OS-9 systems?
- >
- >This company wishes to have two systems; one would take over in case
- >the other goes down. I believe they originally thought of having
- >two cpu cards in one VME cage, sharing all I/O. But the more I think
- >about it, the more it seems to make sense to have two separate full
- >systems...
- >
- >In any case, has anyone here implemented such a beast? If so, do you
- >have any tips? Did you simply have a watchdog program yank the Reset
- >(or Halt?) line on the bad system?
- >
- >thanks! - kevin <kdarling@catt.ncsu.edu>
-
- Aren't some of the space shuttle control systems implemented in such a
- fashion?
- There's gotta be some NASA dude somewhere with some things to say about
- it...
- --
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