IBM manufactured magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD)...
73 KB (9,443 words) - 15:13, 15 September 2024
tape drives. The commercial usage of hard disk drives (HDD) began in 1957, with the shipment of a production IBM 305 RAMAC system including IBM Model...
45 KB (4,883 words) - 18:16, 15 September 2024
became widely used. Floppy disk variants History of hard disk drives History of IBM magnetic disk drives List of floppy disk formats A Japanese inventor...
60 KB (7,044 words) - 20:11, 25 August 2024
The IBM 2321 Data Cell is a DASD that used tape as its storage medium. See also history of IBM magnetic disk drives. IBM 353: Disk drive for IBM 7030...
186 KB (19,362 words) - 15:31, 5 September 2024
needed] Category IBM articles History of IBM magnetic disk drives IBM Archives Biographies Builders reference room Jim Spohrer, "IBM's service journey:...
217 KB (24,497 words) - 20:11, 25 August 2024
The IBM 305 RAMAC was the first commercial computer that used a moving-head hard disk drive (magnetic disk storage) for secondary storage. The system was...
16 KB (1,586 words) - 20:12, 25 August 2024
Older hard disk drives used iron(III) oxide (Fe2O3) as the magnetic material, but current disks use a cobalt-based alloy. For reliable storage of data, the...
18 KB (2,106 words) - 16:21, 7 May 2024
CD-ROM drive in a similar situation. The X68000 has soft-eject 5¼-inch drives. Some late-generation IBM PS/2 machines had soft-eject 3½-inch disk drives as...
79 KB (8,705 words) - 20:09, 25 August 2024
off. Modern HDDs are typically in the form of a small rectangular box. Hard disk drives were introduced by IBM in 1956, and were the dominant secondary...
138 KB (14,071 words) - 18:52, 13 September 2024
12-bit word of CDC 6000 series peripheral processors, plus 2 parity bits) in the CDC 626 drive. Early IBM tape drives, such as the IBM 727 and IBM 729, were...
36 KB (4,294 words) - 09:16, 27 August 2024