Xref: utzoo comp.unix.questions:11327 comp.arch:8039
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!bpa!cbmvax!uunet!vsi!friedl
From: friedl@vsi.COM (Stephen J. Friedl)
Newsgroups: comp.unix.questions,comp.arch
Subject: Re: Does anybody know of a maker of fault tolerant unix systems?
Summary: Clean power is *very* important
Message-ID: <1039@vsi.COM>
Date: 27 Jan 89 06:27:38 GMT
References: <1240@eta.unix.ETA.COM> <2464@spdcc.SPDCC.COM> <118@attibr.UUCP> <1538@lznv.ATT.COM>
Distribution: usa
Organization: V-Systems, Inc. -- Santa Ana, CA
Lines: 27

[how do I get fault-tolererance?]

In article <1538@lznv.ATT.COM>, ziegler@lznv.ATT.COM (J.ZIEGLER) writes:
> And please don't forget power protection, which can eliminate a
> primary cause of system failures to begin with.

     This really cannot be overstated.

     I think there is a common misconception that backup power
supplies are there to give you an extra {few} minutes of power to
do an orderly shutdown, but our experience has not shown this.
Instead, it is there to filter out the 1 second power dropout
that seems to be much more common.  In addition, clean, sine-wave
power will do *wonders* to make those annoying port hangs and
such go away.  We have had several customers for whom serious
line conditioners have made a day-and-night difference.

     Many probably cannot imagine how much damage bad power can
silently do to your machine.

      Steve

-- 
Stephen J. Friedl        3B2-kind-of-guy            friedl@vsi.com
V-Systems, Inc.       I speak for you only      attmail!vsi!friedl
Santa Ana, CA  USA       +1 714 545 6442    {backbones}!vsi!friedl
Nancy Reagan on these *stupid* .signatures: "Enough already, OK?"