Re: OOT:Power Quality in Data Center

Your easiest and most reliable solution (IMHO) is to put a good UPS on
your own rack. That way you have insulation between their power and
your power.

If you sustain a harmonic convergence (which I'm pretty sure went out in
the 60's with significant usage of recreational pharmaceuticals) your
UPS will let you know about it and you will likely not have any problems.

In the meantime, the problem is that issues like that are harder to
track down even for people who've been doing it a while! Unless it's
blatant it may be hard to prove. Is all your equipment UL rated?
Should be. :)

Anyway, isolation is the simplest answer. When the UPS (again, good
quality, known vendor (I like APC personally)) complains, it's much
simpler to point fingers and say "fix it".

Happy holidays to all!

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

JNCI-M, JNCI-ER

evil_at_ine.com

Internetwork Expert, Inc.

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Power corrupts.

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Wouter Prins wrote:
> I would blame the gnomes or ..... santa!
>
> 2009/12/24 ospfv2 <ospfv2_at_gmail.com>
>
>
>> the scenario
>>
>> you arrived in data center,
>> you plug your laptop adaptor into rack PDU,
>> your touch-pad pointer going crazy.
>> so you grab a usb-mouse & connect it to your laptop.
>>
>>
>> then your cisco switch doesn't function properly,
>> it was ok when you configure it in the office.
>>
>> have you ever encounter this issue ?
>>
>> some people told me it was harmonic problem
>> some said it was grounding problem
>> any idea ?
>> is there any tools to measure the power quality
>> before the customer ask me to replace the whole rack and switches
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Thu Dec 24 2009 - 19:42:47 ART