19 Mar
2001
19 Mar
'01
1:11 a.m.
3380's were a product of the 80's. There were several different
flavors...the originals came out in the early
80's. They were known as A0's or AA's. or AD's. They were 'single
density'...each hda had two addressable
actuators (one coming out each side)...each actuator addressed about 600MB
of storage.
They later came out with AE's which were double density...then J's and K's
which were trible density.
Did you happen to grab the magnets from the cabinets? VERY powerful
permanent magnets indeed! (very heavy too).
I have a 3380 HDA I saved from my mainframe days...had a MAJOR
headcrash....when I opened up the top to look, the
head that crashed was vaporized!
-Bob
At 08:59 PM 3/18/2001 -0500, you wrote:
Among my pickups over the weekend were a pair
of these HUGE IBM
3380 drives. Couldn't even begin to find room for the entire unit with
its
cabinet and controllers, but did scavange the drives and motors out of
the cabinet. Biggest drive I've ever seen. Belt driven! from an external
1.5
HP motor ..these things are Big! Cast alluminium housing w/14" discs,
the whole assembly seems about 1/2 the size of a V-6 auto eng!
IBM site has several references to them, circa early 80's I gather
but they sure look older than that. What I'd like to find is IBM
publication #GC26-4491 [IBM 3380 Direct Access Storage Intro] and/or IBM
pub #GX26-1678 [Storage Reference Summary]. Neither seems to be in the
on-line library from IBM.
Any other info or dating is always welcome too.
Thanks, Craig