Photos: Inside Sun's Project Blackbox

A Sun Microsystems Project Blackbox shipping container draws air in on the right side; the air travels to the back of the container, reverses course, and travels back to the front on the left side of the container.

There are four racks of computing gear on each side, with water-cooling modules between each rack to cool the air as it goes.

Photo by Stephen Shankland/CNET News.com