The more I think about it, the less sense this graphic has
If not per sq km, it should at least be per capita
just checking on wikipedia, divided by area GB should have bar around twice high as Germany. 209k m^2 vs 357k m^2
and what does it mean 1 datacenter in the first place?
big as a city sprawling datacenter complex and a bunch of racks in the cellar both count as 1?
They seem to be some cloud services marketplaces, where they link up buyers and sellers. I suspect it only lists the data centers that they have listed that are included in the graphic. That would make a lot of sense, since Chinese data centers used to service people in China are unlikely to be listed, which is why it says in all of China there are only 300 data centers.
Yeah, this dataset seems very incomplete/limited. I'd also argue that the US probably doesn't have over 5000, as many of these vendors have their "own DC" that's just hoteled inside the same giant multi-building complex.
Personally I think it'd be interesting to see this per capita, so here's my back of a napkin math for data centers per 1 million pop (c. 2022):
NL - 16.78
US - 16.15
AU - 11.72
CA - 8.63
GB - 7.68
DE - 6.22
FR - 4.63
JP - 1.75
RU - 1.74
CN - 0.32
Worth noting of course that this only lists the quantity of discrete data centers and says nothing about the capacity of those data centers. I think it'd be really interesting to break down total compute power and total storage by country and by population.
I'd also be interested to know what qualifies as a "data center"? For example, are ASIC based crypto mining operations counted, even though their machinery cannot be repurposed to any other function? That would certainly account for a chunk of the the US (almost all of it in Texas).
Yeah, that's the proper way to think about it. And honestly, it should be servers or racks per capita (i.e. some standard unit), not just "datacenters," since those can be of varying size.
I would really want a measure of actual compute power, like teraflops per capita or something. Still imperfect, but better than just counting the number of buildings.
If you follow the source trail it lists Cloudscene as the source, who seem to be some marketplace for buying and selling cloud services. I highly suspect it's a count of the data centers they have listed by their sellers, which would bias the US and explain why there are so few for China.
I'm shocked the UK is as high as it is. Land costs a huge amount here, as does energy (highest in Europe).
Then again, the UK has an unusually large services sector after Thatcher basically decided to kill the manufacturing sector, and the UK is probably the IT leader in Europe, so I guess it has that going for it.
China being so ridiculously low has me questioning the data though...
The UK's average energy price is high, but it's also very variable as when it's cloudy and calm 20% of demand needs to be imported from France/Norway so wholesale energy is very expensive, but when it's sunny and windy wholesale energy is free or even at negative cost and 20% of generation gets exported to France/Norway, where their energy is more expensive
If you have the option to run datacentres at minimal or even negative energy cost maybe 20% of the time, then shift load elsewhere the rest of the time, then that may be a reasonable proposition