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Blu-ray Disc Recordable (BD-R) and Blu-ray Disc Recordable Erasable (BD-RE) refer to two direct to disc optical disc recording technologies that can be recorded on to a Blu-ray-based optical disc with an optical disc recorder. BD-R discs can only be written to once, whereas BD-RE discs can be erased and re-recorded multiple times, similar to CD-R and CD-RW for a compact disc (CD). Disc capacities are 25 GB for single-layer discs, 50 GB for double-layer discs,[1] 100 GB ("XL") for triple-layer, and 128 GB for quadruple-layer (in BD-R only).[2][3]
The minimum speed at which a Blu-ray Disc can be written is 36 megabits (4.5 megabytes) per second.[4]
As of 2024, one of the primary pioneers of the Blu-ray disc, Sony, is winding down production of recordable Blu-ray discs in its plant in Tagajo, Japan. Sony plans to gradually cease its manufacturing of optical media, including recordable Blu-ray discs.[5]
- ^ "Blu-ray FAQ: How much data can you fit on a Blu-ray disc?". blu-ray.com (not affiliated with the Blu-ray Disc Association). Archived from the original on 14 February 2014. Retrieved 9 January 2010.
- ^ AfterDawn.com. "BDA approves BDXL quad-layer Blu-ray standard". AfterDawn. Archived from the original on 24 February 2017. Retrieved 24 February 2017.
- ^ Miyagawa, Naoyasu (2014). "Overview of Blu-Ray Disc™ recordable/Rewritable media technology". Frontiers of Optoelectronics. 7 (4): 409–424. doi:10.1007/s12200-014-0413-7. S2CID 195208706.
- ^ "Blu-ray FAQ: How fast can you read/write data on a Blu-ray disc?". blu-ray.com (not affiliated with the Blu-ray Disc Association). Archived from the original on 14 February 2014. Retrieved 3 June 2010.
- ^ "Sony Group to cut 250 jobs from recordable media business' key hub". Mainichi Daily News. 29 June 2024. Retrieved 17 July 2024.