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  1. Wikipedia
    https://en.wikipedia.org/wiki/History_of_IBM_magnetic_disk_drives

    History of IBM magnetic disk drives - Wikipedia

    • A prototype unit shipped in late 1960 was the first disk drive to use one head per surface flying on a layer of compressed air as in the older head design of the IBM 350 disk storage (RAMAC). Production 353s used self-flying heads essentially the same as those of the 1301. See more

    Overview

    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) and floppy disk drive (FDD) were invented by IBM and as such IBM's employees were responsible for m…

    Early IBM HDDs

    The IBM 350 disk storage unit, the first disk drive, was announced by IBM as a component of the IBM 305 RAMAC computer system on September 14, 1956. Simultaneously a very similar product, the IBM 355, was announced for the IBM 650 RAMAC …

    IBM 350 – Wikipedia
    Die IBM 350 war das weltweit erste Festplattenlaufwerk und wurde am 14. September 1956 als Bestandteil des Computers IBM 305 RAMAC der Öffentlichkeit vorgestellt. RAMAC steh…
    Wikipedia · https://de.wikipedia.org/wiki/IBM_3…
    Wikipedia text under CC-BY-SA license
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    Overview
    Early IBM HDDs
     

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  2. Wikipedia
    https://en.wikipedia.org/wiki/IBM_ThinkPad_350

    IBM ThinkPad 350 - Wikipedia

     
  3. Wikipedia
    https://de.wikipedia.org/wiki/IBM_350

    IBM 350 – Wikipedia

    Die IBM 350 war das weltweit erste Festplattenlaufwerk und wurde am 14. September 1956 als Bestandteil des Computers IBM 305 RAMAC der Öffentlichkeit vorgestellt. RAMAC steht für Random Access Method of …

  4. Wikipedia
    https://en.wikipedia.org/wiki/History_of_hard_disk_drives

    History of hard disk drives - Wikipedia

  5. Wikiwand
    https://www.wikiwand.com/en/articles/IBM_ThinkPad_350

    IBM ThinkPad 350 - Wikiwand / articles

  7. CHM
    https://www.computerhistory.org/storageengine/...

    1956: First commercial hard disk drive shipped

  8. Computer History Museum
    http://s3.computerhistory.org/groups/ibm-350-ramac.pdf
    [PDF]

    IBM 350 RAMAC - Computer History Museum

  9. People also ask
    What did IBM 350 do?
    History and Heritage Committee Operat... The IBM 350 disk drive storage development led to the breakthrough of on-line computer systems by providing the first storage device with random access to large volumes of data.

    IBM 350 RAMAC Disk File - ASME

    asme.org
    What is IBM ThinkPad 350?
    An IBM ThinkPad 350 sitting open. The IBM Thinkpad 350 series was a notebook computer series introduced in 1993 by IBM as part of their Thinkpad laptop series. It was the successor to the IBM ThinkPad 300. With only 2 models ever made in the series, it was succeeded in 1994 by the IBM Thinkpad 360 series.

    IBM ThinkPad 350 - Wikipedia

    en.wikipedia.org
    What is IBM 350 disk storage?
    The IBM 350 Disk Storage was a major component of the IBM 305 RAMAC (Random Access Memory Accounting) system, introduced in September 1956. The 350 Disk Storage Unit consisted of the magnetic disk memory unit with its access mechanism, the electronic and pneumatic controls for the access mechanism, and a small air compressor.

    IBM 350 Disk Storage Unit - IT History Society

    ithistory.org
    What is the difference between IBM 305 & 350 disk drives?
    The IBM Model 305 data processing system and the Model 350 disk drive became identified as the RAMAC. In September 1956, IBM announced the RAMAC (which consisted of the 350 disk drive and the 305 data processing system). Later, the 350 disk drive was announced as available for use with other systems.

    IBM 350 RAMAC - Computer History Museum

    s3.computerhistory.org
    When did IBM start making a 350?
    The 350 was announced in June 1993. The 125MB disk version started shipping in June 1993, the 250MB version started shipping in July. The New York Times noted that IBM challenged Compaq with the development of the 350, who was the market leader in the lower priced notebook market.

    IBM ThinkPad 350 - Wikipedia

    en.wikipedia.org
    Who designed the IBM 305 disk drive?
    Under Rey Johnson, Lou Stevens led the team that designed the IBM 350 disk drive while John Haanstra led the team that designed the companion IBM 305 data processing system, the first transaction processing system with direct access. The IBM Model 305 data processing system and the Model 350 disk drive became identified as the RAMAC.

    IBM 350 RAMAC - Computer History Museum

    s3.computerhistory.org
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  10. computerhistory.org
    https://archive.computerhistory.org/resources/...
    [PDF]

    The IBM 350 RAMAC disk file, 1984

  11. ethw.org
    https://ethw.org/Milestones:RAMAC,_1…

    Milestones:RAMAC, 1956 - Engineering and …

    The first 350 C disk file became a commercially available product on September 4, 1956, and was a key component of the IBM 305 RAMAC system, which also included a central processor, card reader and printer.

  12. Wikiwand
    https://www.wikiwand.com/en/articles/IBM_350

    History of IBM magnetic disk drives - Wikiwand

  13. Wikipedia
    https://en.wikipedia.org/wiki/History_of…

    History of IBM - Wikipedia

    First Magnetic Hard Disk Drive: IBM introduced the world's first magnetic hard disk for data storage, the IBM 350 disk storage unit, which stored 5 million 6-bit characters (3.75 MB) on fifty-two 24-inch diameter disks. This innovation …

  14. History of Information
    https://www.historyofinformation.com/detail.php?entryid=952

    The IBM 305 RAMAC, the First Computer with a Hard Drive: …

  15. The American Society of Mechanical Engineers - ASME
    https://www.asme.org/.../90-ibm-350-ramac-disk-file

    IBM 350 RAMAC Disk File - ASME

  16. IT History Society
    https://ithistory.org/db/hardware/ibm/ibm-350-disk-storage-unit

    IBM 350 Disk Storage Unit - IT History Society

  17. Datarecovery.com
    https://datarecovery.com/rd/ibm-ramac-350

    The IBM 350: Weird Facts About the First Commercial Hard Drive

  18. Wikipedia
    https://en.wikipedia.org/wiki/IBM_PC_Series

    IBM PC Series - Wikipedia

  19. IBM
    https://www.ibm.com/history/ramac

    RAMAC - IBM

  20. CHM
    https://www.computerhistory.org/revolution/memory-storage/8/233

    The First Disk Drive: RAMAC 350 - CHM Revolution

  21. Wikipedia
    https://en.wikipedia.org/wiki/IBM_305_RAMAC

    IBM 305 RAMAC - Wikipedia

  22. StorageNewsletter
    https://www.storagenewsletter.com/2011/06/20/...

    History: First HDD 55 Years Ago From IBM at 100