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2. List of defunct hard disk manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_defunct_hard_disk...

   At least 218 companies have manufactured hard disk drives (HDDs) since 1956. Most of that industry has vanished through bankruptcy or mergers and acquisitions. None of the first several entrants (including IBM, who invented the HDD) continue in the industry today. Only three manufacturers have survived— Seagate, Toshiba and Western Digital ...

3. History of hard disk drives - Wikipedia

   en.wikipedia.org/wiki/History_of_hard_disk_drives

   History of hard disk drives. In 1953, IBM recognized the immediate application for what it termed a "Random Access File" having high capacity and rapid random access at a relatively low cost. [1] After considering technologies such as wire matrices, rod arrays, drums, drum arrays, etc., [1] the engineers at IBM's San Jose California laboratory ...

4. List of disk drive form factors - Wikipedia

   en.wikipedia.org/wiki/List_of_disk_drive_form...

   5.75 in × 3.25 in × 8 in (146.1 mm × 82.55 mm × 203 mm). This smaller form factor, first used in an HDD by Seagate in 1980, was the same size as full-height 51⁄4 -inch-diameter (130 mm) FDD, 3.25-inches high. This is twice as high as "half height"; i.e., 1.63 in (41.4 mm). Most desktop models of drives for optical 120 mm disks (DVD, CD ...

5. Comparison of high-definition optical disc formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_high...

   This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in 2006, attempted to improve upon and eventually replace the DVD standard. The two formats remained in a format war until February 19, 2008 ...

6. Perpendicular recording - Wikipedia

   en.wikipedia.org/wiki/Perpendicular_recording

   Toshiba produced the first commercially available disk drive (1.8") using this technology in 2005. [15] Shortly thereafter in January 2006, Seagate Technology began shipping its first laptop sized 2.5-inch (64 mm) hard drive using perpendicular recording technology, the Seagate Momentus 5400.3. Seagate also announced at that time that the ...

7. Advanced Format - Wikipedia

   en.wikipedia.org/wiki/Advanced_Format

   Hard disk drive format efficiency with Advanced Format 4K technology and distributed ECC. Having a huge number of legacy 512-byte-sector–based hard disk drives shipped up to the middle of 2010, many systems, programs and applications accessing the hard disk drive are designed around the 512-byte-per-sector convention.