Seagate Technology PLC
Traded as S&P 500 Component
Industry Computer storage
Predecessor(s) Shugart Technology
Founded 1979 (as Shugart Technology)
Founder(s) Alan Shugart
Tom Mitchell
Doug Mahon
Finis Conner
Syed Iftikar
Headquarters Cupertino, California, United States
Area served Worldwide
Key people Stephen J. Luczo (Chairman, CEO & President)
Products Hard disk drives
Revenue Increase US$ 14.93 billion (2012)[1]
Operating income Increase US$ 03.10 billion (2012)[1]
Net income Increase US$ 02.86 billion (2012)[1]
Total assets Increase US$ 10.10 billion (2012)[1]
Total equity Increase US$ 03.49 billion (2012)[1]
Employees 57,900 (2012)[1]
Subsidiaries Maxtor

Seagate Technology PLC an American data storage company was incorporated in 1978 as Shugart Technology. It is currently incorporated in Dublin, Ireland and has its principal executive office in Cupertino, California.[2]

Seagate developed the first 5.25-inch hard disk drive (HDD) in 1980, the 5-megabyte ST-506. They were a major supplier in the microcomputer market during the 1980s, especially after the introduction of the IBM XT in 1983. In 1989, they finalized the purchase of Control Data Corporation's Imprimis division, makers of the Wren product line. This gave Seagate access to Wren's voicecoil-based technology. In 1991, they introduced the 7200 RPM Barracuda line, which remains their high-end offering. They purchased Maxtor in 2006 and Samsung HDD business in 2011.

On March 12, 2013 Seagate announced that it was the first disk manufacturer to have cumulatively shipped two billion HDDs.[3]



On November 1, 1979, Seagate Technology (then called Shugart Technology) was incorporated by co-founders Al Shugart, Tom Mitchell, Doug Mahon, Finis Conner and Syed Iftikar.[4] The name was changed to Seagate Technology to avoid a lawsuit from Xerox's subsidiary Shugart Associates (also founded by Shugart).[5]


Their first product (released in 1980) was the 5-megabyte ST-506, the first hard disk to fit the 5.25-inch form factor of the Shugart "mini-floppy" drive. The hard disk, which used a Modified Frequency Modulation (MFM) encoding, was a hit, and was later released in a 10-megabyte version, the ST-412, with which Seagate secured a contract as a major OEM supplier for the IBM XT, IBM's first personal computer to contain a hard disk. The large volumes of units sold to IBM, the then-dominant supplier of PCs, fueled Seagate's early growth. The 20-megabyte version, the ST-225 (pictured, left), and the 30-megabyte version, the ST-238 (physically similar but using a Run Length Limited ((2,7) RLL) encoding to improve storage capacity), were popular aftermarket additions for the IBM XT and AT and compatible microcomputers. These were also made in SCSI versions.

In 1983, Al Shugart was replaced as president by then chief operating officer, Tom Mitchell. Shugart continued to oversee corporate planning.

Finis Conner left Seagate in early 1985 and founded Conner Peripherals, which originally specialized in small-form-factor drives for portable computers. Conner Peripherals also entered the tape drive business with its purchase of Archive Corporation. After ten years as an independent company, Conner Peripherals was acquired by Seagate in a 1996 merger.

In 1989 Seagate acquired Control Data's (CDC) Imprimis Technology, CDC's disk storage division, resulting in a combined market share of 43 percent.[6] The acquisition was synergistic with little overlap in products or markets;[7] Seagate benefited from Imprimis' head technology and quality reputation while Imprimis gained access to Seagate's lower component and manufacturing costs.[6]


  • September 1991 - Tom Mitchell resigned under pressure from the board of directors. Al Shugart reassumed presidency of the company.
  • November 1991 - Seagate introduced the Barracuda HDDs, the industry's first hard disk with a 7200 RPM spindle speed.
  • May 1993 - Seagate was the first to ship 50 million HDDs.
  • December 1994 - Seagate Technology Inc moves from Nasdaq to New York Stock Exchange and begins trading under ticker symbol SEG.
  • February 1996 - Merges with Conner Peripherals to form world's largest independent hard-drive manufacturer.
  • October 1996 - Seagate introduced the industry's first hard disk with a 10,000-RPM spindle speed.
  • May 1997 - The High Court of Justice in England awarded Amstrad PLC $93 million in a lawsuit over reportedly faulty disk drives Seagate sold to Amstrad, a British manufacturer and marketer of personal computers.[8]
  • October 1997 - Seagate introduced the first Fibre Channel interface hard drive.
  • March 1998 - Seagate produced its 1 billionth magnetic recording head.
  • July 1998 - Shugart resigned his positions with Seagate.[9]
  • August 1998 - Seagate Research is established in Pittsburgh.
  • April 1999 - Seagate ships its 250 millionth hard drive.


  • 2000 - Seagate incorporated in Grand Cayman.
  • February 2000 - Seagate introduced the first 15,000-RPM hard drive.
  • October 2001 - Microsoft Xbox game console shipped with Seagate HDDs.
  • December 2002 - Seagate re-entered the public market (NYSE: STX).
  • June 2003 - Seagate re-entered the HDD market for notebook computers.
  • March 2005 - Seagate shipped its 10 millionth 15,000-RPM hard drive.
  • September 2005 - Seagate acquired Mirra, Inc.
  • November 2005 - Seagate acquired ActionFront Data Recovery Labs.
  • January 2006 - Seagate named 2006 "Company of the Year" by Forbes Magazine.
  • April 2006 - Seagate announced the first professional Direct-To-Disc digital cinema professional video camera aimed at the independent filmmaking market (using their disc drives).[10]
  • May 2006 - Seagate acquired Maxtor in an all-stock deal worth $1.9 billion. Seagate continued to market the separate Maxtor brand.
  • October 2006 - Seagate shipped the first hybrid drive.
  • 2007 - Seagate acquired EVault and MetaLINCS, later rebranded i365.[11] MetaLINCS was a leader in the Discovery space.
  • April 2008 - Seagate was the first to ship 1 billion HDDs.
  • January 2009 - Bill Watkins was released from employment as CEO.[12]
  • December 2009 - Seagate announce their first solid-state drive, the Seagate Pulsar.[13]


  • January 2010 - Seagate's Board of Directors approved changing the company's incorporation Seagate from the Cayman Islands to Ireland. The change was approved at a shareholders meeting on April 14, 2010 and the change of incorporation took effect on July 3, 2011.[14][15]
  • June 2010 - Seagate released the world's first 3TB hard drive, in the form of an external HDD as part of their Seagate FreeAgent line of external HDDs.[16]
  • June 24, 2010 - Seagate announced they were moving their headquarters and most of their staff from Scott's Valley to Cupertino, California.[17]
  • September 2010 - Seagate released the world's first portable 1.5TB hard drive.[18]
  • March 2011 - Seagate announced the first standalone version of its 3TB HDD that can be used with their desktop computers.[19]
  • September 2011 - Seagate launched the world's first 4TB single hard disk external drive.[20]
  • December 2011 - Seagate acquired Samsung's HDD business.[21]
  • March 2012 - Seagate demonstrates the first 1TB/square inch density hard drive, with the possibility of scaling up to 60TB by 2030.[22]
  • March 2013 - Seagate shipping eight drives per second.[23]
  • May 2013 - Seagate unveils first client SSD, next-generation enterprise SSDs, and PCIe accelerator card.[24]
  • October 2013 - Seagate launches a new class of Ethernet drives with the Seagate Kinetic Open Storage platform that includes APIs and associated libraries.[25]


Corporate affairs

Seagate was traded for most of its life as a public company under the symbol "SGAT" on the NASDAQ system, then moved to the NYSE under the symbol "SEG" in the 1990s. In 2000, Seagate incorporated in the Cayman Islands in order to reduce income taxes. In 2000, the company was taken private by an investment group composed of Seagate management, Silver Lake Partners, Texas Pacific Group and others in a three-way merger-spinoff with Veritas Software; Veritas merged with Seagate, which was bought by the investment group. Veritas was then immediately spun off to shareholders, gaining rights to Seagate Software Network and Storage Management Group (with products such as Backup Exec), as well as Seagate's shares in SanDisk and Dragon Systems. Seagate Software Information Management Group was renamed Crystal Decisions in May 2001. Seagate re-entered the public market in December 2002 on the NASDAQ as "STX."



External links

  • Seagate Milestones
  • Seagate hard disk drive production date calculator (1 of 2)
  • Seagate hard disk drive production date calculator (2 of 2)
  • Explanation of Seagate hard disk drive production date
  • Former Seagate logo

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