Submerging your datacenter in green liquid (gallery) Summary: Companies are using server racks that submerge your database servers in cooling, soothing liquid - saving money and the environment. By Andy Smith | March 29, 2012 -- 04:38 GMT (21:38 PDT) Previous | Next Image 6 of 9 Six 42U racks have been installed. Topics: Software, CXO, Data Centers, Data Management, Enterprise Software, Hardware, Storage Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.