HGST (formerly Hitachi Global Storage Technologies Ltd. ) Is a subsidiary of Western Digital, based in San Jose / California. The company employs 45,000 people worldwide.


Hitachi Global Storage Technologies Ltd.. (short HGST ) was born on 1 January 2003 from the merger of the acquired IBM's hard disk drive business ( also based in San José ) and the existing hard disk drive business of Hitachi, which produced only 2.5 "notebook hard drives. The acquisition closed all model series ( for example, Deskstar, Travelstar, Ultrastar, Microdrive ), the development department, manufacturing facilities and all patents with a. This created the third largest hard disk manufacturers in the world. Moreover, there was a wide-ranging cross-licensing agreement between HGST and ExcelStor Technology for desktop hard drives.

7 March 2011 Western Digital announced for 4.3 billion U.S. dollars, the intention to acquire Hitachi Global Storage Technologies. This acquisition was finally completed on 8 March 2012. Since then, the company operates under the name HGST as a subsidiary of Western Digital. In May 2012, WDC was under pressure from the antitrust authorities from the 3.5 " production of HGST to Toshiba.


HGST offers internal and external hard drives in 2.5 "and 3.5" form factor and SSDs.

Manufacturing facilities

HGST has manufacturing facilities around the world and was the first major company to the hard drives manufactured in the People's Republic of China was (of ExcelStor Technology ) and in the meantime made ​​himself.