[c-nsp] Multiple power supply failures. Advise needed

[Michael Ulitskiy]

Interesting. Never heard of that. Can I ask you how you found the source of the 
problem and what you did to get it eliminated?

Michael

On Tuesday 01 September 2009 01:06:12 pm Geoffrey Pendery wrote:
> Another odd-ball thing to look for, which has plagued us in a few
> locations, is zinc whiskers.
> You mention physically moving to a new colo provider, and that your
> power is supposed to be clean...
> We've had repeated power supply failures because of zinc whiskers in a
> few of our sites.
> 
> Check out http://en.wikipedia.org/wiki/Zinc_whiskers and Google for
> "zinc whiskers".
> Probably not your problem, but it's one more weird thing to check.
> 
> 
> -Geoff
> 
> 
> On Tue, Sep 1, 2009 at 11:17 AM, Michael Ulitskiy<mulitskiy at acedsl.com> wrote:
> > Hello,
> >
> > After a little pause it started happening again and we lost 2 more power supplies
> > (this time in servers) during last week.
> > Can anybody advice on a good organization that could do independent power analysis
> > in New York, NY?
> > Thank you,
> >
> > Michael
> >
> >
> > On Friday 14 August 2009 09:56:00 pm you wrote:
> >> Michael Ulitskiy wrote:
> >> > Hello,
> >> >
> >> > We have a very strange problem. We have recently changed colo-space provider and since that
> >> > we had 4 power supply failures in all kind of cisco equipment within 2 month period.
> >> > According to colo provider we're receiving "clean" power backed up by UPSes and generator.
> >> > We're currently have 4 20-amps circuits with APC managed PDUs in them and power supply failures
> >> > happened in 3 of them, so I can't blame it to one specific circuit or PDU.
> >> > There was no environmental warning in the logs of any cisco devices.
> >> > I'm completely out of the clues. I'm going to bring it up with our colo-space provider, but I'm afraid
> >> > they'll need some proof or pointers.
> >> > Does anybody have any ideas what could be causing this and how I can monitor the specific conditions?
> >> > Thanks,
> >> >
> >>
> >> If you're having power supplies cook off like that for no apparent
> >> reason, I'd get an independent analysis of the power being fed to my
> >> outlets.
> >>
> >> ~Seth
> >>
> >
> >
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