Facebook's cold storage today is entirely on spinning disks. The prototype Blu-ray system is estimated to be 50 percent cheaper than the disk-based cold storage, and 80 percent more energy efficient.

The Blu-ray system reduces costs by 50 percent and energy use by 80 percent compared with its current cold-storage system, which uses hard disk drives, said Jay Parikh, Facebook’s vice president ...

We could soon store 700 Terabytes on a 12-centimeter optical disk which would be equal to storing 28,000 Blu-ray disks. A separate advance with in data encoding could triple storage to 2.1 Petabytes ...

From Blu-ray Discs to magnetic tape, archivists are looking for a cheap storage medium that will last centuries. By Charlotte Hu Published Apr 11, 2023 9:00 AM EDT ...

Even dual-layer Blu-Ray discs can only hold 50 gigabytes per side; that amount of data will give you 50 hours of standard ...

You can't keep a good disk down, it seems. Good news for those of you that have kept that big ol' stack of burned DVD and CD backups, taking up space in your attic: They may well be making a comeback.

Another advantage 4K Blu-ray discs have is the sheer amount of data they can hold, which allows for a much higher bitrate and, hence, higher-quality picture and audio than a typical compressed stream.

“Once the internal data storage structures are stabilised using our technology, diamond can achieve extraordinary longevity – data retention for millions of years at room temperature ...

Even in a digital-first world, optical disks like DVDs and Blu-rays still have their many uses. But despite being cheap, sturdy, and small, they can’t keep up with today’s storage needs. This ...

More long-term storage focused are optical storage systems like Blu-ray, which Meta has used in the past for its cold storage. "This effort seems to have been quietly abandoned," the researchers say, ...