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

[Randy McAnally]

I second transients (in other words, major voltage spikes).  

My previous reply stands.

Good luck.

--
Randy
www.FastServ.com

---------- Original Message -----------
From: "Scott Granados" <gsgranados at comcast.net>
To: "Seth Mattinen" <sethm at rollernet.us>, <cisco-nsp at puck.nether.net>
Sent: Tue, 1 Sep 2009 10:39:36 -0700
Subject: Re: [c-nsp] Multiple power supply failures. Advise needed

> 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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> 
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------- End of Original Message -------