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<div>Thank you again for all of the helpful comments. I'm going address different topics separately. <br></div><div><br></div><div>Over the years, I have had a few situations when power was shutdown or lost. Linux system always restarted. Windows would complain at start up. Typically the biggest issue was with OpenOffice / LibreOffice. In my experience it recovered any files that were open, but may a few minutes of the last changes were lost.</div><div><br></div><div>Some years ago, I bought an AC voltage stabilizer. Totally passive based on special resonant transformer. Outputs clean AC waveform despite variations of the input voltage or waveform. It's as big as a desktop computer and very heavy. For that reason, I never put it by my desk. 8 or 10 years back PG&E had an incident that sent a high voltage spike followed by a black out for half an hour. Eventually they contributed to the replacement computer. Come to think of it, one of my IDE drives was a survivor of that incident.</div><div><br></div><div><br></div>
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On Thursday, November 22, 2018, 1:44:56 AM PST, Rick Moen <rick@linuxmafia.com> wrote:
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<div>Quoting Ivan Sergio Borgonovo (<a shape="rect" href="mailto:mail@webthatworks.it" rel="nofollow" target="_blank">mail@webthatworks.it</a>):<br clear="none"><br clear="none">[snip a lot]<br clear="none"> <br clear="none">> And a new UPS.<br clear="none"><br clear="none">Rick's rant #327:<br clear="none"><br clear="none">Why not a voltage regulator?<br clear="none"><br clear="none">Buying a UPS puts about 70% of your purchase money into a huge lead-acid<br clear="none">battery that you'll need to replace about every five-six years, and <br clear="none">all it gets you is ability to bridge continuous operation across<br clear="none">relatively small power outages. Plus, with the right integration<br clear="none">software for your OS, you can get orderly shutdowns when the battery is<br clear="none">about to run out of power. Plus, there's a bit of voltage regulation<br clear="none">circuitry, but typically not as good as the circuitry in a dedicated<br clear="none">voltage regulator box.<br clear="none"><br clear="none">So, wow, the battery's because... we don't yet have journaled<br clear="none">filesytems? I don't know about you, but for the past 15+ years, my<br clear="none">Linux systems have all had journaling, which means that when the power<br clear="none">goes down, sure, the system goes down, but when power's restored the<br clear="none">system comes back up undamaged.<br clear="none"><br clear="none">Given that my systems have journaling, the threat model of concern isn't<br clear="none">so much blackouts as brownouts -- periods of low voltage and voltage<br clear="none">swings. <br clear="none"><br clear="none">Which is what an outboard voltage regulator protects against.<br clear="none"><br clear="none">People keep telling me I ought to have a big honkn' lead-acid battery,<br clear="none">i.e., a UPS, but they never seem to be able to tell me _why_ I should<br clear="none">want that. The cynic in me suspect this is because they really haven't<br clear="none">thought things through, and haven't considered perhaps that voltage<br clear="none">regulation without the big honkn' lead-acid battery might be what's<br clear="none">actually wanted.<div class="ydp3535cca6yqt2204973062" id="ydp3535cca6yqtfd92084"><br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">conspire mailing list<br clear="none"><a shape="rect" href="mailto:conspire@linuxmafia.com" rel="nofollow" target="_blank">conspire@linuxmafia.com</a><br clear="none"><a shape="rect" href="http://linuxmafia.com/mailman/listinfo/conspire" rel="nofollow" target="_blank">http://linuxmafia.com/mailman/listinfo/conspire</a><br clear="none"></div></div>
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