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Enterprise-class drives can have a height up to 15 mm. Seagate released a 7 mm drive aimed at entry level laptops and high end netbooks in December 2009. Western Digital released on April 23, 2013 a hard drive 5 mm in height specifically aimed at Ultrabooks. [33] Toshiba MK1216GSG 1.8" 120 GB hard disk drive with Micro SATA
2011 - Samsung announces 1 TB of capacity per 3.5 inch hard drive platter. [61] 2012 – TDK demonstrates 2 TB on a single 3.5-inch platter [62] 2012 – WDC acquires HGST operating it as a wholly owned subsidiary. WDC then provides rights to Toshiba, [63] allowing it to re-enter the 3.5-inch desktop hard disk drive market. [64]
History of IBM magnetic disk drives. IBM manufactured magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. [1][2] Both the hard disk drive (HDD) and floppy disk drive (FDD) were invented by IBM and as such IBM's employees were responsible for many of the innovations in these products and their ...
HDDs are a type of non-volatile storage, retaining stored data when powered off. [2][3][4] Modern HDDs are typically in the form of a small rectangular box. Hard disk drives were introduced by IBM in 1956, [5] and were the dominant secondary storage device for general-purpose computers beginning in the early 1960s.
Western Digital WD740GD A Fujitsu laptop drive (80 GB, 7,200 RPM) on the left and a Western Digital VelociRaptor (300 GB, 10,000 RPMs). The Western Digital Raptor (often marketed as WD Raptor, 2.5" models known as VelociRaptor) is a discontinued series of high performance hard disk drives produced by Western Digital first marketed in 2003.
The first HDD [11] had an average seek time of about 600 ms. [12] and by the middle 1970s, HDDs were available with seek times of about 25 ms. [13]Some early PC drives used a stepper motor to move the heads, and as a result had seek times as slow as 80–120 ms, but this was quickly improved by voice coil type actuation in the 1980s, reducing seek times to around 20 ms.