The AI-generated cat pictures thread
mkturbo.com
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I was about to post this also. I think Mitt had much better rhymes.
I think the delivery of that line was ******* epic.
That was pretty good to.
Originally Posted by Mitt Romeny
ill go bain capital
on your donkey ***
restruction your face
on your donkey ***
restruction your face
Originally Posted by Lincoln
of the people
by the people
for the people
eagle
by the people
for the people
eagle
Boost Pope
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That's a very interesting servo arrangement. Linear voice-coil motors were pretty standard for "big" drives of that era, but it looks like two servo motors 180° opposed, presumably with two separate sets of heads. I can't recall ever seeing a hard disk like that before.
Any idea what the back-story is on that? Upper heads on one side, lower heads on the other? Two heads per surface for redundancy / speed / double the probability of a head crash?
Looks like a model 3380 or 3370, but I still can't find any specs.
Any idea what the back-story is on that? Upper heads on one side, lower heads on the other? Two heads per surface for redundancy / speed / double the probability of a head crash?
Looks like a model 3380 or 3370, but I still can't find any specs.
Elite Member
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I was working on CAD back in the early 80's. Hard drives were multiple platter things, about the size of a standard LP record, with 8-12 of them stacked up. They were insanely expensive. Damage to the platters when changing out the stack was a distinct possibility.
At one job in the DC area, we found that the drives were getting full (80% of capacity or so) and starting to have sector errors because of it. Nowdays one small HD (well under 500GB) would have handled the entire company's needs with plenty of rooom to spare. We had three stacks at that particular company, and that was considered excessive at the time. 3.5" floppies were a marvel of modern technology.
At one job in the DC area, we found that the drives were getting full (80% of capacity or so) and starting to have sector errors because of it. Nowdays one small HD (well under 500GB) would have handled the entire company's needs with plenty of rooom to spare. We had three stacks at that particular company, and that was considered excessive at the time. 3.5" floppies were a marvel of modern technology.
Boost Pope
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Just a guess.
Less, actually. I just bought a new 120GB Kingston for $99, with a $39 rebate ($60 final price.)
I just wish that, leveredging today's cost / density factors, that somebody would make a small SLC drive and sell it for what an equivalent MLC drive cost 3 years ago.
Each one of those cabinets houses three drive assemblies, roughly 450MB each. If I recall, a couple of them actually had RA-60s in the uppermost slot, which were the removeable cakepack drives you mention:
I have utterly no idea what the '60s were used for- I don't remember them being accessible from my account. Having all that on-line fixed storage was just incredible. Even though they still had the 9-track tape drives, I don't recall ever needing to request a tape-mount. Everything was right there on the hard drives, online 100% of the time.
Last edited by Joe Perez; 10-15-2012 at 11:27 PM.
Boost Pope
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On the other hand:
RAMAC, the first commercial hard drive. Officially the IBM model 350, and forming the RAMAC 305 when paired with its matching CPU. This bad boy had fifty 24" platters turning at 1,200 RPM, and yet only a single pair of heads!
Unlike modern hard drives, with one (or two) heads permanently positioned on each surface, the RAMAC functioned a bit like a 1950s era jukebox. The single pair of heads was mounted on an elevator, and moved up and down to select a specific disk. The disks were kept rotating constantly, and the heads were loaded and unloaded dynamically as needed. You can see the head elevator to the left of the disk pack here:
This gave the RAMAC a very interesting metric. Unlike modern drives (everything from the 60s onward) in which seek times are measured only from track to track, the RAMAC also had to seek from disk to disk. Its capacity was the equivalent of 5 megabytes. According to legend, engineering felt that they had the capability to double this shortly after release, however the sales department didn't think they'd be able to convince any customers of the necessity to pay for a 10 megabyte drive, and the upgrade project was thus shelved.
And then there's Maude:
RAMAC, the first commercial hard drive. Officially the IBM model 350, and forming the RAMAC 305 when paired with its matching CPU. This bad boy had fifty 24" platters turning at 1,200 RPM, and yet only a single pair of heads!
Unlike modern hard drives, with one (or two) heads permanently positioned on each surface, the RAMAC functioned a bit like a 1950s era jukebox. The single pair of heads was mounted on an elevator, and moved up and down to select a specific disk. The disks were kept rotating constantly, and the heads were loaded and unloaded dynamically as needed. You can see the head elevator to the left of the disk pack here:
This gave the RAMAC a very interesting metric. Unlike modern drives (everything from the 60s onward) in which seek times are measured only from track to track, the RAMAC also had to seek from disk to disk. Its capacity was the equivalent of 5 megabytes. According to legend, engineering felt that they had the capability to double this shortly after release, however the sales department didn't think they'd be able to convince any customers of the necessity to pay for a 10 megabyte drive, and the upgrade project was thus shelved.
And then there's Maude:
Last edited by Joe Perez; 10-16-2012 at 01:33 PM.
When I was in college, I got to play with a couple Mk 1 computers. No, I'm not that old, this was in 98, but they were attached to some old 727 sims donated to the school by TWA.
Needless to say, I had no idea what I was doing with those things (trying to fix them), but I did learn how to land a 727!
Needless to say, I had no idea what I was doing with those things (trying to fix them), but I did learn how to land a 727!