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From: Jim Durham <durham@w2xo.pgh.pa.us>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: UPS recommendations ?
Date: Fri, 18 Aug 1995 15:16:24 -0400
Organization: Pittsburgh OnLine, Inc.
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Message-ID: <Pine.BSF.3.91.950818150904.222B-100000@w2xo.pgh.pa.us>
References: <aak2.808400899@ra.msstate.edu> <40pmbb$onv@bonnie.tcd-dresden.de> <DDDCIB.B7B@midway.uchicago.edu> <40r3gg$ua@palmer.demon.co.uk>
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In-Reply-To: <40r3gg$ua@palmer.demon.co.uk>
On 15 Aug 1995, Gary Palmer wrote:
> In article <DDDCIB.B7B@midway.uchicago.edu>,
> Matthew Edward Zaucha <mezaucha@midway.uchicago.edu> wrote:
> > Excuse me for my blatant ignorance, but why would an operating
> >system need to support the UPS backup device? I have looked at the more
> >popular (and cheap) power backups and it seems that all that needs to be
> >done is to plug your computer power cables into it, and get back to your
> >work. What else must be done? Thanks in advance, as I too am in desparate
> You need OS support so that if the power fails, and the battery in the UPS
> gets too low to keep the machine working much longer, it can shut the
> OS down cleanly before it runs totally dry.
>
Hi guys,
In reading this thread, a question popped into my "mind?" that I had
been thinking about...
I assume that you need a Best supply, or at least one with a serial port
that can be set up to deliver some output to the OS to tell it to fold
up it's tents? How does one do this with FreeBSD? I can think of lots
of evil schemes like a little 5 volt supply plugged into regular power
that fails when the lights go out and toggles a bit on your parallel port,
etc, but does anyone have any practical experience with doing this?
-Jim Durham