Not too detailed, but a nice overview that I think succeeds in having some information while being engaging.
The only thing that particularly confused me was this line:
> We also custom-build all of our servers so they are 93% efficient.
How do you measure overall efficiency of a server as a percentage, rather than some kind of compute-per-watt metric? I assume it's not 93% of the theoretically optimal electron->computron conversion factor. ;-) The only thing I can guess is that it's the average efficiency of the power supplies?
> The only thing I can guess is that it's the average efficiency of the power supplies?
Googling suggests the most efficient server power power supplies available do indeed have average efficiencies of around 93% (e.g. http://goo.gl/R1HqV ), so yup, that seems likely.
The only thing that particularly confused me was this line:
> We also custom-build all of our servers so they are 93% efficient.
How do you measure overall efficiency of a server as a percentage, rather than some kind of compute-per-watt metric? I assume it's not 93% of the theoretically optimal electron->computron conversion factor. ;-) The only thing I can guess is that it's the average efficiency of the power supplies?