itwbennett writes: Facebook said last year that it was exploring Blu-ray for its data-center storage needs, and on Tuesday it showed a prototype system at the Open Compute Project summit meeting in San Jose, California. It designed the system to store data that hardly ever needs to be accessed, or for so-called "cold storage" (think duplicates of users' photos and videos that it keeps for backup). The Blu-ray system reduces costs by 50% and energy use by 80% compared with its current cold-storage system, which uses hard disk drives, said Jay Parikh, Facebook's vice president of infrastructure engineering.
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