itwbennett writes: A couple of years ago, Facebook revealed it was using Blu-ray disks as a cost-efficient way to archive the billions of images that users uploaded to its service. When Facebook users upload photos, they're often viewed frequently in the first week, so Facebook stores them on solid state drives or spinning hard disks. But as time goes on the images get viewed less and less. At a certain point, Facebook dumps them onto high-capacity Blu ray discs, where they might sit for years without being looked at. Now, Panasonic has said it plans to commercialize the technology for other businesses, and is working on new disks that will hold a terabyte of data.