Archival Disc

Archival Disc
Media typeOptical disc
EncodingSame as Blu-ray for data, different disc metadata format
Capacity300 GB, 500 GB, 1 TB[1]
Block size2048 bytes
Read mechanism155-405 nm diode laser, Numerical Aperture NA=0.85[1]
Write mechanism405 nm diode laser
StandardArchival Disc whitepaper v1
Developed by
Dimensions120 mm (4.7 in) diameter
1.2 mm thickness[2]
Weight16 grams (0.56 oz)
UsageLong-term data storage
Extended fromBlu-ray Disc
ReleasedQ2 2015

Archival Disc (AD) is the trademarked name of a discontinued optical disc storage medium designed by Sony and Panasonic for long-term digital storage. First announced on 10 March 2014 and introduced in the second quarter of 2015, the discs were intended to withstand changes in temperature and humidity, in addition to dust and water, ensuring that the disc would be readable for at least 50 years.[2] The agreement between Sony and Panasonic to jointly develop the next generation optical media standard was first announced on 29 July 2013.[3] The discs were mass-produced by Panasonic in 2016.[4] The product is discontinued as of 2024.[5][6] The two companies have since collaborated on the development of another format, Optical Disc Archive.

  1. ^ a b Cite error: The named reference sonyannounce2014 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference pcworld was invoked but never defined (see the help page).
  3. ^ Plafke, James (29 July 2013). "Sony and Panasonic join forces to create 300GB+ optical disc by 2015 - ExtremeTech". Extremetech. Retrieved 2022-08-30.
  4. ^ "Supporting the IoT/Big Data Era with the "Optical Disc Data Archiving" - the High Capacity High Speed Challenge". Panasonic. 23 August 2017. Retrieved 4 January 2021.
  5. ^ "Scalable Library - Sony Pro". Sony Professional. 2024-09-27.
  6. ^ "Standalone Drives - Sony Pro". Sony Professional. 2024-09-27.