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Magnetic tape data storage
Magnetic tape data storage is a system for storing digital information on magnetic tape using digital recording. Modern magnetic tape is most commonly packaged in cartridges and cassettes. The device that performs writing or reading of data is a tape drive. Autoloaders and tape libraries automate cartridge handling. For example, a common cassette-based format is Linear Tape-Open, which comes in a variety of densities and is manufactured by several companies.
Sony announced in 2014 that they had developed a tape storage technology with the highest reported magnetic tape data density, 148 Gbit/in² (23 Gbit/cm²), potentially allowing tape capacity of 185 TB.〔(【引用サイトリンク】url=http://www.sony.net/SonyInfo/News/Press/201404/14-044E/index.html )〕
In May 2014 Fujifilm followed Sony and made an announcement that it will develop a 154 TB tape cartridge by the end of 2015, which will have the areal data density of storing 85.9 Gbit/in² (13.3 Gbit/cm²) on linear magnetic particulate tape.〔http://storageservers.wordpress.com/2014/05/20/fujifilm-achieves-154tb-data-storage-record-on-tape/〕
== Open reels ==
Initially, magnetic tape for data storage was wound on reels. This de facto standard for large computer systems persisted through the late 1980s. Tape cartridges and cassettes were available as early as the mid-1970s and were frequently used with small computer systems. With the introduction of the IBM 3480 cartridge in 1984, large computer systems started to move away from open reel tapes and towards cartridges.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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