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Media type | Optical disc |
---|---|
Encoding | WORM (write once) |
Capacity | 300GB~5.5 TB (per cartridge) |
Write mechanism | Optical Blu-ray Laser (405nm) |
Standard | UDF (Universal Disc Format) |
Developed by | Sony Corporation |
Manufactured by | Sony, TDK, Panasonic |
Usage | Digital Data Archival (50~100+ Years) |
Released | 2012 |
Optical Disc Archive (ODA) is an archival storage technology developed by Sony. A single cartridge is designed to hold as many as 12 optical discs, each of which are similar to, but not directly compatible with, Blu-ray or Blu-Ray-BDXL systems, with total capacities per cartridge as high as 5.5 TB. Fabrication of the optical discs is licensed to TDK but primarily fabricated and developed by Sony and Panasonic.
It is part of Sony's proprietary PetaSite data archival library system, which was based on SAIT2 & LTO2 linear tape drives, in partnership with IBM from 1998~2012, when it was phased out for optical based media. Marketed as a longer life and more durable competitor to the popular tape based Linear Open Tape (LTO) storage systems using a similar removable cartridge system, where each cartridge holds 12 optical discs, or 6,420 discs per 42U rack, the first generation were single sided discs and re-writable up to 1.5 TB using Sony's well known Professional Disc used in XDCAM cameras and on-site archival. The generation 3 version of the cartridge, using the Sony and Panasonic jointly developed archival discs (AD) each cartridge has a total capacity of 5.5 TB. This uses 11 optical discs, 3 layers on each side, at 500 GB per disc,[1] with next generation planned to reach 1 TB a disc or 12 TB a cartridge.[2]