IBM model 350 disk file - Search
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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 empl… See more

    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, w… See more

    IBM System/360 and other IBM mainframe HDDs

    The IBM 2302 is the System/360 version of the 1302, with track formatting in accordance with S/360 DASD architecture rather than 7000 series architecture.
    It uses a non-removable module of 25 platters, of … See more

    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.
    asme.org
    Wikipedia text under CC-BY-SA license
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    Table of Contents
    Overview
    Early IBM HDDs
    IBM System/360 and other IBM mainframe HDDs
    What did IBM 350 do?
     

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  2. The world’s first hard disk drive was the IBM Model 350 Disk File and it appeared in 1956. It consisted of fifty 24″ disks which could hold up to 3.75MB of data. It was a huge device, weighing over a ton and had to be transported by fork lift truck.

    Computing History 1956 The First Moving Head Hard Disk Drive - …

    www.dataclinic.co.uk/history-snapshot-1956-the-worlds-first-moving-head-hard-disk-drive/
    www.dataclinic.co.uk/history-snapshot-1956-the-worlds-first-moving-head-hard-…
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  3. CHM
    https://www.computerhistory.org/storageengine/...

    1956: First commercial hard disk drive shipped - CHM

     
  4. The American Society of Mechanical Engineers - ASME
    https://www.asme.org/.../90-ibm-350-rama…

    IBM 350 RAMAC Disk File - ASME

    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.

  5. The American Society of Mechanical Engineers - ASME
    https://www.asme.org/wwwasmeorg/media/resourcefiles...
    [PDF]

    The IBM 350 RAMAC Disk File - ASME

  6. CHM
    https://www.computerhistory.org/revolutio…

    The First Disk Drive: RAMAC 350 - CHM Revolution

    IBM’s RAMAC (Random Access Method of Accounting and Control) magnetic disk drive pioneered this ability. The RAMAC 350 storage unit could hold the equivalent of 62,500 punched cards: 5 million characters (about 3.75 MB).

  7. Images of IBM Model 350 Disk File

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

    IBM 350 RAMAC - Computer History Museum

  9. Data Clinic
    https://www.dataclinic.co.uk/history-snaps…

    Computing History 1956 The First Moving Head Hard …

    Oct 28, 2014 · The world’s first hard disk drive was the IBM Model 350 Disk File and it appeared in 1956. It consisted of fifty 24″ disks which could hold up to 3.75MB of data. It was a huge device, weighing over a ton and had to be …

  10. YouTube
    https://www.youtube.com/watch?v=L9T0rdpkQ5U

    World's First Hard Drive | IBM Model 350 Disk File #history

  11. IT History Society
    https://ithistory.org/db/hardware/ibm/ibm-3…

    IBM 350 Disk Storage Unit - IT History Society

    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. Assembled with covers, the 350 was …

  12. Invention & Technology Magazine
    https://www.inventionandtech.com/content…

    IBM 350 RAMAC Disk File | Invention & Technology …

    Fifty disks stacked on a cantilevered, rotating spindle recorded in one hundred concentric tracks on each side of each disk, providing 5 million characters of data storage. Developments, such as the pressurized-air head bearing, made disk …

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

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

  14. PetaPixel
    https://petapixel.com/2014/10/29/take-21-ibm-hard...

    It Would Take 21 of These IBM Hard Drives from 1956 to Hold

  15. Invention & Technology Magazine
    https://www.inventionandtech.com/landmark_landing/80038

    IBM 350 RAMAC Disk File - Invention and Tech

  16. StorageNewsletter
    https://www.storagenewsletter.com/2018/03/01/...

    History (1956): First Commercial HDD Shipped - StorageNewsletter

  17. This Day in Tech History
    https://thisdayintechhistory.com/09/14/first-commercial-hard-drive

    First Commercial Hard Drive - This Day in Tech History

  18. Facebook
    https://www.facebook.com/marketplace/item/1734338720653023

    vintage ibm computers - Desktop Computers - St. Louis, Missouri ...

  19. Wikipedia
    https://en.wikipedia.org/wiki/IBM_Personal_Computer

    IBM Personal Computer - Wikipedia

  20. Indeed
    https://www.indeed.com/cmp/IBM/reviews?fcountry=US...

    IBM Employee Reviews in St. Louis, MO - Indeed

  21. computerhistory.org
    https://archive.computerhistory.org/resources/...
    [PDF]

    The IBM 350 RAMAC disk file, 1984

  22. Indeed
    https://www.indeed.com/cmp/IBM/salaries?location=US/MO/St.+Louis

    IBM salaries in St. Louis, MO: How much does IBM pay?

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