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Szymon Sokół 🇵🇱🇪🇺🇺🇦

Maybe some oldtimers will be able to identify those relics. I am pretty sure the first one is from a drive that came with IBM 4361 we scrapped some 30 years ago and the other one from a VAX-11/750, but I don't know what models they are.
Update: the one on the left has been identified as IBM 3380 and the one on the right as Fujitsu M2294N ia803200.us.archive.org/13/ite
Thanks to everyone who helped!

nutilius@SDF
Public

@blotosmetek ibm drives 3380 and 3390 had 8 plates, even today emulated devices has 15 tracks per cylinder (16 was spare). The older models had less plates, but I don’t remember any with 9 plates. See: ibmmainframes.com/references/d

ibmmainframes.comMAINFRAME DISK CAPACITY TABLEIBM Mainframe DISK Capacity Tables
nutilius@SDF
Public

@blotosmetek Do you have any part number?

Szymon Sokół 🇵🇱🇪🇺🇺🇦
Public

@nutilius Haven't found any numbers (except the hand-written 47050 that can be seen on the first assembly's lower right).

Altomare
Public

@nutilius @blotosmetek 3380 had 9 platters, and the weird mounting bracket seems to fit the form factor. Also fits the time period for an IBM 4361

nutilius@SDF
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@altomare @blotosmetek ok I assumed that software geometry (tracks per cylinder) is equivalent to hardware, my mistake, thanks!

Szymon Sokół 🇵🇱🇪🇺🇺🇦
Public

@altomare @nutilius thank you! indeed, a cross-section through 3380 clearly shows 9 platters, so it must be it.

Altomare
Public

@blotosmetek Second hard drive is very likely made by Fujitsu, it matches that picture of a Fujitsu M2294k from online