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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Re[2]: telehouse - 25 broadway
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 - [email protected] Systems Engineer - Internetworking Engineer - CCIE 3440 Read TMBG List - [email protected], www.tmbg.org
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