20 Apr
2018
20 Apr
'18
6:45 p.m.
From: Warner Losh
Drum memory stopped being a new thing in the early
70's.
Mid 60's. Fixed-head disks replaced them - same basic concept, same amount of
bits, less physical volume. Those lasted until the late 70's - early PDP-11
Unixes have drivers for the RF11 and RS0x fixed-head disks.
The 'fire-hose' drum on the GE 645 Multics was the last one I've heard
of. Amusing story about it here:
http://www.multicians.org/low-bottle-pressure.html
Although reading it, it may not have been (physically) a drum.
There never was a drum device, at least a commercial,
non-lab
experiment, for the VAXen. They all swapped to spinning disks by then.
s/spinning/non-fixed-head/.
Noel