20 Apr
2018
20 Apr
'18
10:53 p.m.
On Fri, Apr 20, 2018 at 9:45 AM, Noel Chiappa <jnc(a)mercury.lcs.mit.edu>
wrote:
Correct; it was a fixed head disk; nicknamed firehose for the high data
rate. I am not sure if this is the exact model number, but it was a
Librafile device:
https://archive.org/stream/TNM_Librafile_3800_mass_memory_from_Librascope_-…
-- Charles
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.