On Thu, May 7, 2009 at 2:52 PM, Tom Limoncelli <[email protected]> wrote: > Here's the most concise summary of what I know about power: > > 1. 90% of all power outages are less than 10 seconds. A UPS can > handle that fine. > 2. 9% of all power outages are between 10 seconds and a few hours. A > UPS can handle that fine. > 3. 1% (or less) of all power outages are multi-day outages. UPSs > that can handle that are way more expensive than you can afford. Get > a generator and use the UPS to cover the gap between when the outage > starts and when the generator is providing clean power. > Therefore... > 4. If you can't afford a generator, get a UPS that lasts lonog enough > to shut down your machines. > ...and... > 5. Because outages tend to be very small or very long, if you reach > the 1-hour point, start powering off machines and send employees home.
6. Is your cooling covered? UPS's and generators aren't worth much if you room cooks everything when utility power is gone. -- ------------------------------------------- nathan hruby <[email protected]> metaphysically wrinkle-free ------------------------------------------- _______________________________________________ Discuss mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
