On Wed, Feb 2, 2011 at 12:10 PM, Brian Warner <[email protected]> wrote:

> Note that it also gives up reliability: according to my math, 5-of-10 is
> much much better than 1-of-2 when the servers are good (say >90%
> availability). (on the other hand, 1-of-2 is much better when the
> servers are bad).


Break-even for those two configurations is when server reliability is at
60.7%.  Above that, 5-of-10 is better, below that, 1-of-2 is better.

-- 
Shawn
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