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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 technologies. [3]
The IBM 305 RAMAC was the first commercial computer that used a moving-head hard disk drive (magnetic disk storage) for secondary storage. [1] The system was publicly announced on September 14, 1956, [ 2 ] [ 3 ] with test units already installed at the U.S. Navy and at private corporations. [ 2 ]
IBM 1443 Printer (00B) or IBM 1403 Printer (00E) Disk storage: IBM 2311 Magnetic Disk Drives (190 & 191) or IBM 2314 Direct Access Storage Facility Tape storage: IBM 2401 Magnetic Tape Units (180 & 181 for 7-track, and 182 & 183 for 9-track) Telecommunications controller (If used in a telecommunications environment) IBM 2701 Communication ...
Model 20 disk storage uses IBM 2311 disk drives, model 11 or 12, attached to an integrated "storage control feature" on the CPU. [1]: pp.58–76 If multiple drives are attached they have to be the same model. Both models use the 1316 disk pack which provides a maximum of 203 cylinders with 10 tracks per cylinder. The model 11 uses all cylinders ...
Disk storage controller (1956 enhancement for then new IBM 355 Disk Storage Unit) (five extra operation codes) Sixty 10-digit words of magnetic core memory at addresses 9000 to 9059. This small fast memory had an access time of 96 μs , a 26-fold improvement relative to the rotating drum.
IBM System Storage TS7650G ProtecTIER Deduplication Gateway – Designed to meet the disk-based data protection needs of the enterprise data center while reducing costs. The system offers inline deduplication performance and scalability up to 1 petabyte (PB) of physical storage capacity per system that can provide up to 25 PB or more backup ...
The 3480 tape format is a magnetic tape data storage format developed by IBM. The tape is one-half inch (13 mm) wide and is packaged in a 4 in × 5 in × 1 in (102 mm × 127 mm × 25 mm) cartridge. The cartridge contains a single reel; the takeup reel is inside the tape drive.
The IBM 2301 is a magnetic drum storage device introduced in the late 1960s to "provide large capacity, direct access storage for IBM System/360 Models 65, 67, 75, or 85." The vertically mounted drum rotates at around 3,500 revolutions per minute, and has a head-per-track access mechanism and a capacity of 4 MB.