One of the major considerations when building a data centre is the cost of cooling . Some data centres get around this by liquid cooling their server racks . Microsoft decided to bury theirs under the sea . Project Natick has been on the seafloor near Orkney , Scotland , for over a year now . Powered by renewable energy and utilising submarine technology to utilise the surrounding cold water , the research project has “ demonstrated dramatically better reliability than our land-based counterpart ,” according to Microsoft .

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Microsoft tests Project Natick , self-sustaining underwater datacenter

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