Editing Hard drive (section)

==History==
{{See also|Floppy disk}}

[[Wikipedia:Yoshiro Nakamatsu|Dr. Yoshiro Nakamatsu]], in Tokyo, conceived the idea of a magnetic disk in 1950. He later received a Japanese patent in 1952,<ref name="Lazarus">{{cite news | title ='Japan's Edison' Is Country's Gadget King : Japanese Inventor Holds Record for Patent | url = https://www.nytimes.com/1995/04/10/news/10iht-matscon.ttt.html | first = David | last = Lazarus | work = The New York Times | date = April 10, 1995 | accessdate = 2010-12-21 }}</ref><ref>[http://stellarix.com/interesting-patents/yoshiro-nakamatsu-the-thomas-edison-of-japan/ YOSHIRO NAKAMATSU – THE THOMAS EDISON OF JAPAN], Stellarix Consultancy Services, 2015</ref> and received an American patent dated 1958.<ref>[http://www.google.co.uk/patents/US3131937 Magnetic record sheet], Patent US3131937</ref> The IBM 350, released by [[IBM]] in 1956, was the first commercial hard disk drive. It could hold 5 million 6-bit characters, equivalent to 3.75 megabytes.

In 1978, [[Wikipedia:Nippon Telegraph and Telephone|NTT]] released the NTT Model 801, which introduced a storage capacity of 800&nbsp;MB per spindle.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0051.html NTT Model 801 Magnetic Disk Unit (JS4370)], [[Wikipedia:Information Processing Society of Japan|Information Processing Society of Japan]]</ref> In 1986, the NTT GEMMY introduced 8.8&nbsp;GB storage capacity and 4.4&nbsp;MB/s transfer rate.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0053.html NTT GEMMY High-Speed, High-Capacity Magnetic Disk Memory Unit], Information Processing Society of Japan</ref> In 1989, Jimmy Zhu and H. Neal Bertram from [[Wikipedia:University of California, San Diego|UCSD]] proposed exchange decoupled granular microstructure for thin film disk storage media, still used today.

In 1990, the [[Wikipedia:Toshiba|Toshiba]] MK1122FC was the first HDD to use a glass [[Wikipedia:hard disk drive platter|hard disk drive platter]], with advantages such as greater shock resistance compared to aluminium platters<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0074.html Toshiba MK1122FC], Information Processing Society of Japan</ref> The same year, the [[Wikipedia:Hitachi|Hitachi]] H-6587 featured 2.92 gigabytes storage, with nine 9.5-inch disks, with a transfer rate of 4.2 MB/s and speed of 4260 [[Wikipedia:RPM|RPM]].<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0016.html Hitachi H-6587 Magnetic Disk Unit], Information Processing Society of Japan</ref>

In 1996, the Toshiba MK0200MAT became the thinnest 2.5-inch HDD, at 8.45&nbsp;mm thickness.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0079.html Toshiba MK0200MAT], Information Processing Society of Japan</ref> In 1998, the Toshiba MK2109MAF became the thinnest 2.5-inch HDD, at 6.35&nbsp;mm thickness.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0082.html Toshiba MK2109MAF], Information Processing Society of Japan</ref> In 1998, the Hitachi DK3E1T-91 was the first HDD to surpass 12,000 RPM speed.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0092.html Hitachi DK3E1T-91 3.5-inch Hard Disk Drive], Information Processing Society of Japan</ref> In 2000, the Hitachi H-65A1 and H-65A5 became the largest disk array units, with total capacity of 27&nbsp;[[Wikipedia:Tebibyte|TB]], including up to 73&nbsp;GB per HDD.<ref>[http://museum.ipsj.or.jp/en/computer/device/magnetic_disk/0096.html Hitachi H-65A1/H-65A5 Disk Array Units], Information Processing Society of Japan</ref>