Regarding backup power supplies

https://plus.google.com/u/0/+LaurenWeinstein/posts/K8rCVgUvoTP

Since I just rode over a nasty power hit here in L.A. during a
wind/rainstorm, a few words about backup power supplies. You want them.
And you want more of them than you think you do. No matter what anyone
else tells you, over-provisioning of "uninterruptable power supplies"
(UPSes) is on the side of the angels. I'd much rather have two units
running at 25% capacity each, than one at 50%. 

Good units with monitoring capabilities (typically USB) are cheap enough
now that there's no reason to play games with this stuff. Many will let
you hot swap batteries without shutting down associated equipment. Also,
this is one area (along with printer toner cartridges) where I don't
recommend going aftermarket on replacement supplies. You'll pay a lot
for the brand replacement batteries -- often a significant fraction of
the entire UPS units, but there are so many horrible knockoffs out
there. In fact, you also want to buy those name-brand batteries from
reliable sources -- piracy in this realm is also rampant. 

Having sufficient reliable backup power changes "what a nightmare"
situations into "that was mildly interesting" situations. 

Trust me on this.

--Lauren--
Lauren Weinstein ([email protected]): http://www.vortex.com/lauren 
Founder:
 - Network Neutrality Squad: http://www.nnsquad.org 
 - PRIVACY Forum: http://www.vortex.com/privacy-info
Co-Founder: People For Internet Responsibility: http://www.pfir.org/pfir-info
Member: ACM Committee on Computers and Public Policy
Lauren's Blog: http://lauren.vortex.com
Google+: http://google.com/+LaurenWeinstein 
Twitter: http://twitter.com/laurenweinstein
Tel: +1 (818) 225-2800 / Skype: vortex.com
I have consulted to Google, but I am not currently 
doing so -- my opinions expressed here are mine alone.
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