Date: Tue, 2 Dec 2014 06:08:12 -0500 From: Alejandro Imass <aimass@yabarana.com> To: Perry Hutchison <perryh@pluto.rain.com> Cc: Erich Dollansky <erichsfreebsdlist@alogt.com>, kudzu@tenebras.com, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: OT: UPS for FreeBSD Message-ID: <CAHieY7TS0NPmMRXhrdcMdAG%2B5Z%2BwNsnKv%2BeE8vgDhtj7vZqqow@mail.gmail.com> In-Reply-To: <547d74b4.qPmD4NU27Cup8Ccm%perryh@pluto.rain.com> References: <CAHieY7QGp2ELF-R91eu=vSrPsimVmVNJQ4kfucQ56PR7EEZmig@mail.gmail.com> <m57qdq$did$1@ger.gmane.org> <54777AB1.9010800@bluerosetech.com> <m581p1$65m$1@ger.gmane.org> <54779629.302@bluerosetech.com> <alpine.BSF.2.11.1411271433320.60866@wonkity.com> <5478BD4F.7020306@yahoo.com> <5478BEE6.30308@bluerosetech.com> <5478CC08.9090307@yahoo.com> <20141128204722.561f948e@archlinux> <5478F16A.80605@yahoo.com> <CABhTyc9m7fOoeV170dj=foAhmyYWphzc8KD8wBacu5gNRPhT%2BQ@mail.gmail.com> <54791d3a.w/pI0kak03d%2B3nKC%perryh@pluto.rain.com> <CAHu1Y71vVbdx6Yd1VbE7kb_8k9O5UG93RXEaORPU0tULCpMsCQ@mail.gmail.com> <20141129113405.3d1bd1d6@X220.alogt.com> <54798883.saa13h6lE6rPwZCf%perryh@pluto.rain.com> <20141130212746.6d5eaf1f@X220.alogt.com> <547bd5bd.dKE49fHIj28ERZyT%perryh@pluto.rain.com> <20141201140037.584faf7e@X220.alogt.com> <CAHieY7Rq6CBASdEkm_tNOuKF8kzK3_f6TCoQD=RzgHtbhCymHw@mail.gmail.com> <547d74b4.qPmD4NU27Cup8Ccm%perryh@pluto.rain.com>
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On Tue, Dec 2, 2014 at 3:13 AM, Perry Hutchison <perryh@pluto.rain.com> wrote: > Alejandro Imass <aimass@yabarana.com> wrote: > > > ... at high power you would still need to employ high voltage to > > decrease loss in the distribution, or you would need to employ > > ridiculously large conductor bars to be able to distribute > > low-voltage DC even in the most modest data center ... > > Oh, for Pete's sake! What part of "integrate a UPS with the PSU" > ( > http://lists.freebsd.org/pipermail/freebsd-questions/2014-November/262603.html > ) > is so hard to understand? > > Note that I was NOT discussing the integration of the battery to the server which essentially the design of a laptop. I was discussing using DC for power distribution in general which currently is impractical. Best, -- Alejandro Imass
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