As per the question title, how much do large private data centres cost to run?
closed as not a real question by Jason Berg, Ward, Wesley, ThatGraemeGuy, pauska Feb 16 '11 at 11:49
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There's no indication of how many datacenters that covers, or the breakdown between datacenters and the other costs, but that gives you an order-of-magnitude estimation of the total cost.
Rigo you question is way too undefined to answer with any degree of accuracy but I'm going to give it a go regardless as this is kind of up my street.
The main issue is what's counted as production cost, lets go through them in order of most-likely-to-be-included-in-production-costs;
Now these costs don't include servers/networking/storage etc. and don't include developers/integration etc. just keeping the show on the road type guys simply because there's no way to even hazard a guess at these issue. They also don't include comms costs, again due to huge variances.
Purely out of personal experience I have three dedicated suites at a very large data centre in London's Docklands area, about 750 square metres with full service (power/aircon, security, admin, changes) but my own fibres in/out of the place and it costs me around $2.2m/year. I also have a 6,000 square metre place that we own that still costs around $26m/year to run. Comms costs are $500k and $7m respectively per year.
Hope this helps.
By the way, MarkH's comment above is probably what these companies actually work off, when you're making piles of cash nobody stands around counting, only when the cash stops coming in :)