Optical Disc Archive Optical Disc Archive Optical Disc Archive is a storage technology that was introduced by the Sony Corporation. It uses removable cartridges, where each cartridge holds 12 optical discs. Each of the internal optical discs is similar to, but not compatible with, a Blu-ray disc. The latest version of the cartridge, that has a total capacity of about 3.3TB, uses discs that hold about 300GB each. The technology was publicly announced on 16 April 2012 during the NAB Show with the first units shipping in February 2013. Generation 2 of the Optical Disc Archive technology is scheduled for mid-2016. Generation 2
Optical disc corresponding disc player. For computer data backup and physical data transfer, optical discs such as CDs and DVDs are gradually being replaced with faster, smaller solid-state devices, especially the USB flash drive. This trend is expected to continue as USB flash drives continue to increase in capacity and drop in price. Additionally, music purchased or shared over the Internet has significantly reduced the number of audio CDs sold annually. The first recorded historical use of an optical disc was in 1884 when Alexander Graham Bell, Chichester Bell and Charles Sumner Tainter recorded sound on a glass disc using a beam