http://xkcd.com/705/I work at a rural ISP. We promise uptime from 8:00AM to 10:00PM Eastern Time. Our UPSes will keep the network up for 4 hours. The back up generator will keep it going for 12 hours. But what happens when you have a 3 day power outage due to a snow storm?
I got up at 6:00AM, packed the sled and snowshoes into the Jimmy, along with several cans of gasoline and 2-stroke oil, drove as far as I could, snow shoed the rest of the way, refilled the generator, and got it going.
But between 10:00PM and 8:00AM, you'd better believe I turn off my phone. I need to get some sleep sometime.