Microsoft just finished a three-month experiment operating an underwater data center. A server rack with the power of about 300 PCs was placed into a water-tight steel cylinder and lowered into the ocean off the coast of central California.
The wacky experiment was launched because current data centers are woefully inefficient. They're built where energy and land are cheap (not close to where people actually live). And they waste so much energy cooling their massive computers.
The ocean can solve those problems. Ocean currents can produce enough energy to power the sub-sea data centers. The cold ocean floor sufficiently cools the computing components inside the pod. And since most people live near the ocean, placing data centers under water could potentially increase the speed at which customers could access the information stored in Microsoft's cloud.
The experiment was so successful that Microsoft operated the underwater data center for 75 days longer than it had planned to. It even began running actual customers' workloads on it, according to Peter Lee, corporate vice president of Microsoft Research NExT.
Microsoft has since fished the experimental data center out of the water for analysis. The next step is to get a larger pod, with about four times the computing power, under the ocean for testing.
Unlike the first experiment, the next pod will also be equipped with turbines, which will convert the ocean's currents into electricity.
It's not clear when, if ever, underwater data centers will become a viable product. But Microsoft is determined to try by taking small, incremental steps forward.
Though Microsoft (MSFT, Tech30) is still analyzing the environmental impacts of the study. Data centers are both hot and loud, which could have deleterious effects on ocean life.
Given the growth in the cloud, industry analysts believe that most of the world's data centers have yet to be built. But building a data center takes at least two years -- an eternity in the tech industry.
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