Am Dienstag, 17. Januar 2023 um 15:54:54 MEZ hat Paul Koning via cctalk <cctalk@classiccmp.org> Folgendes geschrieben:
>With hard drives you have to worry about mechanical faults, of course. I >wonder if there are any long term storage issues with the bearings. To my understanding, during the late 90s, the bearigs where changed from mechanical-type to fluid-type bearings in order to be within required tolerances decreasing by the increasing storage density. I wonder, how well these fluid-bearings last over two or three decades especially when merely used. I recall that there were problems reported with winchester disk drives from the 80s where the bearings got stuck when the drives were not used in 10 or more years, possibly in combination with inapproriate storage conditions (temperature&humidity). >I have an RM03 pack somewhere. There probably are a few places left that >could read it. If it were an RA60 pack it would be a whole lot more >problematic, I suspect. Without an >old drive, how would you recover the >data? Spin table? Perhaps, if you can find, or reverse engineer, the format. Do you assume the problem with RA60 disk packs to be more problematic because of a smaller availability of systems with RA60 drives to read the packs compared to CDC 9762 /RM03 drives? Greetings, Pierre
