Date: Fri, 26 May 2000 00:07:26 +1000 From: "Doug Young" <dougy@gargoyle.apana.org.au> To: <rshea@opendoor.co.nz>, <freebsd-newbies@FreeBSD.ORG> Subject: Re: Necessary to use a UPS ? Message-ID: <048a01bfc652$90ca2cd0$847e03cb@ROADRUNNER> References: <200005250826.e4P8Q1D05266@deborah.paradise.net.nz>
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I've got a bunch of FreeBSD setups running Apache, only two have UPS. The power supply in many areas of Brisbane (Queensland) ranges from fair to quite poor, particularly for locations near industrial estates & big shopping centres. I've seen supply voltage fluctuations in those areas between 190V & 280V in a matter of minutes (supposed to be 230 - 240), and short term blackouts are quite common in many other as well. Energex typically blames trees touching the wires, however one has to wonder since most power here is underground. So far I've only had one FreeBSD system that got so badly corrupted it needed a reinstall, however before I ran FreeBSD I had various incarnations of linux, and those disasters were so sensitive to just about everything from clouds in the sky to the girlfriend's "wrong time of the month" that reinstalls were a daily event. I did read some thread in the -questions mailing list a few months back where some expert was talking about differences between linux & unix filesystems. It was mostly over my head, but the issue seemed to be something about files being written in a symmetric or asymmetric format. The gist of it was that if a FreeBSD box loses power its supposedly less likely to get mad than a linux one is. While I don't begin to understand the finer points of that stuff, it sure seems from my experience that view is correct.. . ----- Original Message ----- From: <rshea@opendoor.co.nz> To: <freebsd-newbies@FreeBSD.ORG> Sent: Thursday, May 25, 2000 6:26 PM Subject: Necessary to use a UPS ? > Hi - I'm sorry if this is a FAQ but I can't find it mentioned > elsewhere. I'm planning to install FreeBSD on an old PC but I'm > concerned that I don't have an uninterruptible power supply. > > I thought I had heard that Unix file systems could get very nastily > twisted when they were powered down unexpectedly but I don't see > any reference to the necessity for them in the various FreeBSD > books/web pages I have read. > > What's the worse thing that can happen ? The machine will be > initially only be used for a 'play web server'. > > Interested in your thoughts/experiences. > > richard shea. > > > ***************************************************** > Open Door Ltd > PO Box 119-46 > Wellington > > PH 04 384 7639 > FX 04 384 7672 > ***************************************************** > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-newbies" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message
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