Last working RAMAC (first hard disk storage)

One head serves 50 platters. 24 inch platters. 20 tracks to the inch.

You might have seen this classic photo as described by Ken Shirriff

See also
IBM Archives: IBM 350 disk storage unit

and for some archive footage and photos with explanation, from the CHM:

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Is the original data available in any place? I have tried to find it to know which information was recovered but I didn’t find anything.

I think you’d need to contact the CHM. If you look like a researcher they will probably give you access to materials.

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