On Jul 19, 2013 10:04 PM, "Darr247" <darr247@xxxxxxxxx> wrote:
>
> On 2013-07-19 1:01 PM, John R Pierce wrote:
> > On 7/19/2013 5:51 AM, Darr247 wrote:
> >> On 2013-07-19 3:54 AM, Gordon Messmer wrote:
> >>>> Regardless of your storage, your system should be powered by a
> >>>> monitored UPS. Verify that it works, and the drive's cache shouldn't
> >>>> be a major concern.
> >> It should also be a 'true sine wave' output when running on battery.
> >> Many UPS units output a 'stepped approximation' (typically pulse width
> >> modulation), which some computer power supplies may not like.
> > virtually all PC and server power supplies now days are 'switchers', and
> > could care less what the input wave form looks like. they full wave
> > rectify the input voltage to DC, then chop it at 200Khz or so and run it
> > through a toroidal transformer to generate the various DC voltages.
> >
> >
>
> Heh... go ahead and use stepped approximation UPS's then.
> What do I know; I'm just a dumb electrician.
I just trust Florida Flicker n Flash - never had outages.... more than once
a day!
Sorry could not resist.......
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