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

[Michael Ulitskiy]

I forgot to mention that after the 1st wave of failures we have installed tripp lite 
surge protectors on all circuits. These last failures happened with tripp lites installed,
so it shouldn't be transients.

The events are random.  Happened during daytime, night-time, weekdays, weekend. 
I can't see any pattern. 

Moving out is a last recourse which I hate to think about, but sure is an option that's being considered. 
Just been there half a year ago.

Michael

On Tuesday 01 September 2009 01:39:36 pm Scott Granados wrote:
> Are these random events?  Have you mapped the failures against any sort of 
> power testing / maintenance that the provider is conducting?  We used to 
> blow power supplies in an XO facility in San Francisco and found out after 
> some digging that their power folks were crack smokers, not professionals 
> and were the actual cause of the failures  You might also want to make sure 
> the backup power is sized properly.  I have a client now that lost several 
> 6500 supplies after a power failure in the bay area because their UPS system 
> went crazy under far to much load.  Sounds like transients to me!
> 
> ----- Original Message ----- 
> From: "Seth Mattinen" <sethm at rollernet.us>
> To: <cisco-nsp at puck.nether.net>
> Sent: Tuesday, September 01, 2009 10:21 AM
> Subject: Re: [c-nsp] Multiple power supply failures. Advise needed
> 
> 
> > Michael Ulitskiy 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,
> >>
> >
> > Unfortunately I don't (I'm in Reno, NV). What did your provider have to 
> > say?
> >
> > Also, Gert just posted here about adding a grounding lug to the chassis
> > solving random reboots. Perhaps you can try that, too. It won't hurt.
> >
> > ~Seth
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