nanog mailing list archives
Re: Re[2]: telehouse - 25 broadway
From: Leo Bicknell <bicknell () ufp org>
Date: Sun, 16 Sep 2001 11:23:27 -0400
On Sun, Sep 16, 2001 at 11:10:30AM -0400, David Lesher wrote:
This is just as much a case of matching equipment to application as is buying a new backbone router. Do you buy based on a "100 year flood" peak; the "Mothers Day calling" peak or the "105% of >1hr" model. Justify your decision the the beancounter. 25 points.
Every time I've seen a standby generator sized for a computer data center the 'continuous run' figure was used for the maximum loading. Data center loading is generally fairly well known, if you have a N KW UPS, it's known to draw N + M KW on input at full load, and the generator needs to be able to supply N + M for continuous run. Overrun amounts are _very_ limited. Typically < 30 minutes @10% over, and < 5 minutes @20% over. I don't think I've ever seen one with a rating for more than 20% over. Even a bean counter won't expect a power outage to be over in 30 minutes. -- Leo Bicknell - bicknell () ufp org Systems Engineer - Internetworking Engineer - CCIE 3440 Read TMBG List - tmbg-list-request () tmbg org, www.tmbg.org
Current thread:
- Re: Re[2]: telehouse - 25 broadway, (continued)
- Re: Re[2]: telehouse - 25 broadway mike harrison (Sep 16)
- Re: Re[2]: telehouse - 25 broadway David Lesher (Sep 16)
- Re: Re[2]: telehouse - 25 broadway JC Dill (Sep 16)
- Re: Re[2]: telehouse - 25 broadway kevin pop account (Sep 16)
- Re: Re[2]: telehouse - 25 broadway Leo Bicknell (Sep 16)
- Re: Re[2]: telehouse - 25 broadway Charles Sprickman (Sep 16)
- Re: Re[2]: telehouse - 25 broadway Alex Rubenstein (Sep 16)
- generator cooling (Re: Re[2]: telehouse - 25 broadway) E.B. Dreger (Sep 16)
- Re: generator cooling (Re: Re[2]: telehouse - 25 broadway) Alex Rubenstein (Sep 16)
- Re: Re[2]: telehouse - 25 broadway David Lesher (Sep 16)
- Re: Re[2]: telehouse - 25 broadway Leo Bicknell (Sep 16)
- Re: Re[2]: telehouse - 25 broadway Sean Donelan (Sep 16)
- Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) Robert Boyle (Sep 16)
- Re: Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) Lincoln Dale (Sep 16)
- Re: Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) David Lesher (Sep 16)
- Re: Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) Lincoln Dale (Sep 16)
- Re: Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) George Michaelson (Sep 16)
- Now:Power/Generators (Was: Re[2]: telehouse - 25 broadway) Robert Boyle (Sep 16)