jcl Posted January 31, 2006 Report Share Posted January 31, 2006 IBM celebrated the 50th anniversary of the invention of the hard disk drive Firday. The IBM 350 Disk Storage Unit shipped in Sept. 1956 as part of the IBM 305 RAMAC (Random-Access Method of Accounting and Control). The HDD unit was 60 x 68 x 29 inches, contained 50 24-inch discs spinning at 1200 RPM, total capacity of 5 million characters (4,272 KiB), 600 ms average seek time. Pictures in the second and third links.(Hat tip to a.f.c.) Quote Link to post Share on other sites
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