On 05/10/2018 09:57 AM, Chuck Guzis via cctalk wrote:
Jim Thornton and folks at CDC ADL were working on a 100K RPM drum spinning in vacuo for a paging store, but they couldn't get it to work reliably.Anything with high bit density needs to have the heads very close to the data surface. With the heads close, you really need to have aerodynamic flying heads to compensate for thermal and other variations in the mechanical system. So, I really have doubts the evacuated drum is going to work.
Jon
