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The history of hard drives-IBM 3340

April 12, 2008 at 9:38 am · Filed under The history of hard drives

IBM 3340 direct access storage facility
As head suspended in the top of discs, magnetic discs plating in the sealed hard disk can be rapidly rotating, an ordinary hard disk head movement relative platter speed can reach several hundred kilometre...

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The history of hard drives-IBM 350 RAMAC

April 12, 2008 at 9:14 am · Filed under The history of hard drives

September 1956, the world’s first disk storage which systems IBM 350 RAMAC come out .
IBM 350 disk storage unit

IBM 350

Model 1 announced September 4, 1956
Model 2 announced May 5, 1958
Models 3 & 4 announced ...

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