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The IBM 3340 Direct Access Storage Facility, code-named Winchester, was introduced in March 1973 for use with IBM System/370. [43] Three models were announced, the 3340-A2 with two drives and a controller, the models B2 (two drives) and B1 (one drive). B-units can connect to the model A2 to a maximum of eight drives.
Also in 1973, IBM introduced the IBM 3340 "Winchester" disk drive and the 3348 data module, the first significant commercial use of low mass and low load heads with lubricated platters and the last IBM disk drive with removable media. This technology and its derivatives remained the standard through 2011.
IBM storage devices This page was last edited on 16 July 2012, at 12:25 (UTC) . Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ; additional terms may apply.
Other IBM innovations during the early 1970s included the IBM 3340 disk unit – introduced in 1973 and known as "Winchester" after IBM's internal project name – which was a storage technology which more than doubled the information density on disk surfaces. Winchester technology was adopted by the industry and used for the next two decades.
One or two DASD adapters are available (depending upon model) for attachment of one 3340 A-unit and with up to three additional 3340 or 3344 B-units providing up to eight devices. String Switch feature in the 3340 A-unit allows sharing of 3340/3344 DASD with another IBM processor or director that supports the A-units and string switching. [28]
The last "public domain" version of ACP, hence its last "free" version, was ACP 9.2, which was distributed on a single mini-reel with an accompanying manual set (about two dozen manuals, which occupied perhaps 48 lineal inches of shelf space) and which could be restored to IBM 3340 disk drives and which would, thereby, provide a fully ...
Harker advanced through a series of positions at IBM to become the IBM San Jose Laboratory Director in 1972. He is best known for his leadership of the 1311 Disk File project, but he considered the 1350/1360 (Cypress) Image Storage System his most challenging assignment and the creation of the Technology and Advanced Development Group (TAD) in 1969 amongst his most important accomplishments.
The IBM System/3 was an IBM midrange computer introduced in 1969, [1] and marketed until 1985. It was produced by IBM Rochester in Minnesota as a low-end business computer [ 2 ] aimed at smaller organizations that still used IBM 1400 series computers or unit record equipment .