RE: Named PTF's - was CPF324A

[Don <dr2@xxxxxxxxxxxx>]

sounds like the old days when the folks in the building next door turned
on the microwave dishes and the 360's crashed....  A little bit of
shielding took care of that problem...and in some cases it was as simple
as closing the blinds to the room...:)



On Mon, 9 Dec 2002, Neil Palmer wrote:

> I recall reading that cover letter too, but do not have a copy of it.
>
> ...Neil
>
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>
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> "MCPARTLAND, Stan" <stanley.mcpartland@bently.com>
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>         To:     "'midrange-l@midrange.com'" <midrange-l@midrange.com>
>         cc:
>         Subject:        RE: Named PTF's - was CPF324A
>
>
> > From: Steve Landess
> >
> > This may be stuff of urban legend, but I heard about it in the mid-90's,
> I
> > believe...
> >
> > Apparently some AS/400 customers were having intermittent problems with
> > their systems crashing.  After investigation, it was found that if the
> > system was located above a certain elevation, gamma rays would zap
> memory
> > bits between refresh cycles, causing the system to go down.
> >
> > The  fix was a PTF that caused memory refresh to occur more frequently
>
> I recall that PTF.  Used to have the cover letter, but lost it over the
> years.  The cover letter listed cosmic rays as the cause of the problem.
> It
> was a hyper PTF that was released in 1989 or 1990.
>
> Stan
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>
>
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