The tunnels linking data halls in the Green Mountain Data Center in Norway, which will use cool water from a nearby fjord to support its cooling system.
A small but growing number of data centers are slashing their cooling costs by using the environment as their chiller, tapping nearby rivers, underground lakes, wells and even the Baltic Sea. A new project in Norway plans to draw cold water from an adjacent fjord and use it to cool data halls.
The Green Mountain Data Center is located on the shores of the island of Rennesoy, inside concrete buildings within caves carved out of the mountain. Racks of servers will now fill underground halls that once stored ammunition for NATO.
More of the Data Center Knowledge article from Rich Miller