US 3503060 DIRECT ACCESS MAGNETIC DISC STORAGE DEVICE March 24, 1970, invented by Goddard & Lynott, assigned to IBM

The number of industry participants decreased to six in 2009 and to three in 2013. (See §Manufacturing history for more details) J. M. Harker; D. W. Brede; R. E. Pattison; G. R. Santana; L. G. Taft (September 1981). "A Quarter Century of Disk File Innovation" (PDF). IBM Journal of Research and Development. 25 (5): 677–690. doi: 10.1147/rd.255.0677. Hard drive retention: Hard drive retention is not available on models with a soldered hard drive, including XPS 9315 2in1, Chromebooks or Venue tablets, except the Venue 11 Pro. Fuller, Thomas (6 November 2011). "Thailand Flooding Cripples Hard-Drive Suppliers". New York Times . Retrieved 12 November 2011. Hard disk manufacturers] (in Chinese and English). Archived from the original on 2016-12-06 . Retrieved 2017-03-30. - lists 126 HDD manufacturers including 3 current ones.

HDDs continued to get smaller with the introduction of the 3.5-inch form factor by Rodime in 1983 and the 2.5-inch form factor by PrairieTek in 1988. The speed of an internal HDD is determined by factors including the read/write speeds and hard disc RPM. Transferred using the latest interface, SATA III, users can gain up to 6 gb/s read/write speeds (theoretically). However, to understand the actual HDD speed you may need to look at the Sequential Read/Write speeds of the drive. The HDD RPM is another property that gives an idea of its performance potential, which tells you how fast the SHINGLED Magnetic diskette(s) rotate inside the device. The common HDD RPM in BD is 5400 and 7200. Try to get a higher RPM HDD for faster speeds. Rated Lifespan (HDD MTBF) In 2011 – Floods hit many hard drive factories. Predictions of a worldwide shortage of hard disk drives cause prices to double. [22] [23] [24] Beyond sheer size, other factors such as the fastest hard drive and fastest SSD speed, as well as overall performance, play a critical role in our evaluation. Our guide also touches upon the best external hard drive and best portable SSD options available, ensuring that you find a balance between capacity, speed, and portability.

You can also get a specialized hard disk drive for gaming, with a very high HDD Cache Memory for faster load times. One popular HDD brand of this type is the Firecuda series of hard drives by Seagate. These gaming desktop HDDs are fitted with internal parts to facilitate better locating and accessing data from their hard disc plates. Also, the drive shell is optimized for temperatures inside a typical high-performance computer. Enterprise Grade First hard drive manufactured by using the Advanced Format of 4,096‑byte sectors instead of 512‑byte sectors. [45] : Overview Jimmy Zhu and H. Neal Bertram from UCSD proposed exchange decoupled granular microstructure for thin film disk storage media, still used today. The 1982 NTT "PATTY" HDD was helium filled but was considered a failure at least in part due to helium leakage, see: Decades of Proven Research Underpin Seagate’s Helium Drive. Areal Technology MD-2060 – 60 megabytes, one 2.5-inch disk platter. First commercial hard drive with platters made from glass. [34] [35] [36]TheRef - Hard Drives". TheRef lists 101 HDD manufacturers active from 1989 to 1996, only three of which remain in 2017. Disc-storage innovations keep coming while manufacturers ponder user needs". EDN. May 20, 1980. p. 59.