WD, founded in 1970 and headquartered in Lake Forest, California, is one of the oldest hard disk drive manufacturers, and one of the founders of the IDE interface. WD withdrew from the SCSI market in 1999 to focus on IDE, and in the second half of 2001, six-month sales of $1.015 billion and maintained a profit of $33 million. WD is a company that is not good at publicity, so that people can remember the unique technology of only a few, in fact, WD's technical strength is not to be underestimated, the performance of its hard disk in the long term at a high level certainly have advanced technology support.

Seagate

Seagate was founded in 1979 and is headquartered in Scotts Valley, California, USA. In 2000, Seagate voluntarily withdrew from the stock market and became a private company, with its products mainly including SCSI and IDE hard disks, tape drives, and networked storage devices. With revenues reaching a whopping $2.74 billion in its fiscal fourth quarter statement, Seagate is the undisputed leader of the hard disk drive industry. Seagate places a high value on technology development, spending as much as $900 million on research and development. However, like other companies, its proprietary technology is focused on hard drive protection and noise suppression.

Hitachi

Hitachi acquired IBM's storage division and in January 2003 officially launched a new brand of hard disk drives, known today as Hitachi hard drives. Hitachi mainly has the 180GXP series, which follows the IBM hard disk numbering, and the newly launched 7K250 series. Both series feature aluminum platters, GMR heads, and liquid bearing motors, with the difference being that the 180GXP features platters with a single-disc capacity of 60 G, while the 7K250 series features platters with a single-disc capacity of 80 G. On March 8, 2011, Western Digital announced that it was acquiring Hitachi's hard disk drive business for a total of approximately $4.3 billion in cash and stock (to be completed in the third quarter), thus declaring the the end of the three-pronged era in the hard disk drive market. Currently Seagate's market capitalization of about 6.32 billion U.S. dollars, Western Digital's acquisition of Hitachi was 8.41 billion U.S. dollars, after the acquisition will be far more than Seagate to become a hard disk drive manufacturers in the "first brother.

Samsung

Samsung's hard drive business started in 1989, when it was involved in a wide range of hard drives, from notebook hard drives to SCSI hard drives, but for various reasons, it ended up focusing only on the development of IDE hard drives. Samsung hard disk in the industry's position is relatively not high, basically belongs to the role of technology adopters, but Samsung for the hard disk noise and reliability also developed their own special technology. Samsung Electronics announced on the afternoon of April 19, 2011, Beijing time, officially priced at $ 1.4 billion (in cash plus stock) to Seagate to sell its hard disk drive business.

Toshiba

World within the hard disk drive industry, the traditional Seagate, Maxtor. Western Digital, Samsung are familiar to everyone, but focusing on notebook use of 2.5 inches below the size of the hard disk manufacturer Toshiba, many DIY players may have only heard the name and relatively little contact. In fact, Toshiba in the small size hard disk undisputedly belongs to the leader of the position, from 2.5 inches. 1.8 inches to the launch of the 0.85-inch hard disk, the period in the small size hard disk in notebook computers and consumer electronics performance is very good. Toshiba acquired Fujitsu hard disk business in 2009.

Fujitsu

As one of the world's several major hard disk drive manufacturers, Fujitsu (Fujitsu), its products are not as well known as Seagate and Maxtor, but its position in the hard disk drive field has always been very solid. Users with a little experience believe that Fujitsu hard disk will not be unfamiliar, because until Fujitsu announced a few years ago to withdraw from the desktop market and the retail market, Fujitsu hard disk has begun to "retreat to the background", and fully act as a server and laptop manufacturers of OEMs, but for the use of laptop computers, Fujitsu's laptop hard disk can still be seen everywhere, and even and another laptop hard disk maker, Hitachi, has a close relationship with IBM, in the TTG hard disk, the hard disk is a very important part of the hard disk. Even IBM, which has a close relationship with another notebook hard disk maker Hitachi, uses Fujitsu products in its ThinkPad, and its strength is evident. Fujitsu's hard disk business was acquired by Toshiba in 2009.

Maxtor

The world's leading provider of information storage solutions, founded in 1982, is headquartered in Milpitas, California, and employs about 6,500 people worldwide.Maxtor is listed on the NASDAQ under the ticker symbol MXTR.The company's sales were nearly $2.5 billion in 1999, and in the first quarter of 2000, its In the first quarter of 2000, it shipped 6.6 million hard disk drives, most of which were three- to four-disk products. The company's rapid growth is due in large part to a flexible, high-profile strategy, superior product quality, strong technical capabilities, and exceptional customer support Maxtor Corporation is one of the world's largest suppliers of hard disk storage products and solutions. Maxtor is the industry leader in magnetic media products and was acquired by Seagate in 2007.

IBM

IBM was the inventor and creator of the hard disk, with many patented technologies. But then the glass disks suffered extremely high return rates, which, along with a variety of other reasons, forced the popular IBM hard drives out of the market.

Etuo

Shenzhen Etuo Technology Co., Ltd ("Etuo Technology") was founded in 2001, with a registered capital of 26.6 million U.S. dollars, is a sino-foreign joint venture enterprise held by Great Wall Science and Technology Co. It is the largest independent research and development, production and sales service of hard disk drives in China, and has a modern production base in Shenzhen, China, and has set up its own hard disk drive research and development center in the U.S. In 2004, the company achieved sales revenue of 3 billion yuan. Specializing in hard disk drive research and design, manufacturing and sales services, ETO is a high-tech enterprise in Shenzhen, Shenzhen export "top 100 enterprises", "Guangdong Province, large-scale export enterprises", "2004 National Industry 500 enterprises".

Quantum

Founded in 1980, Quantum Corporation is a globally recognized expert in the field of data protection and big data management, offering a unique family of intelligent storage solutions that provide unmatched value for traditional, virtual and cloud environments. Quintum's products include: the DXi family of disk deduplication and replication systems for rapid backup and recovery; vmPRO solutions for protecting virtual machine data; Scalar tape automation products for disaster recovery and long-term data retention; and StorNext big data management software and appliances for high-performance file **** enjoyment and archiving.