No way, I don't think I would be investing in back up generators, at least not for a long time. They are more important in critical hosting environments, such as high frequency trading for example. For bitcoin mining, if it goes down, then it would be rare, <24 hours at a time, maybe every other month or something. Plus, I think the location brags high uptime and low power outages, but maybe that's what they all say. My friend has hosted with Toom.IM for example and I think they had a power outage one time in a 3-4 month period and they were only down for a couple hours. Not worth the investment in my opinion. I don't think any of the bitcoin hosting competitors who offer <$100 per kW pricing are investing in back up generators, but maybe ASICSPACE or toom.im or HashPlex can chime in.

Back-up internet connection may be more dooable, sure. It's true we didn't even cover internet connection, but these days I take Internet for granted so I'm going to guess that's not going to be a significant expense in relation to rent + electricity. Correct me if I'm wrong, I should probably look into this, too.

I think Jamphone is probably referring to Cooling. Nobody really talked about cooling much, but this warehouse is in an environment high north in latitude, so it's winters most of the time with a modest summer. Also, these aren't high-end servers/computers, but bitcoin miners. I think they can operate in less-than-typical "data-center" friendly environments. This isn't Texas or California, even though some have been able to host there as well.  Some have suggested that I may be able to do away with HVAC completely, or at a very bare minimum as long as I set up the racks properly and have smart ventilation. Are they bsing me? I don't think so, but maybe.