Another thought about "theoretical capacity" of clik! drive:
(even though I'm likely talking to myself)
Philip Davis on the "other" thread posted a link to a caddy patent, which looks like it might be the long-time-no-hear-from zip/Clik! caddy, and this brings up the math:
With a 250 MB Zip, 100 mm dia, 25 mm unwritable area in center, and
Clik! 50 mm dia, using the same 25 mm unwritable area in center (to allow for Zip drive to read Clik! disk w/o extra head travel),
maximum capacity for the Clik! is approx. 50 MB, not too far from the stated 40 MB capacity. Now this assumes that my approximate figures are right on the money and the drives can read all the way out to the edge of the disk and in to the center pad, which is not too realistic.
So, with the same technology in the Zip 250, assuming it's as good as it gets reliably for a floppy at the present, we can't make a Clik! 100 or much more than a 40.
Now, for theoretical capacity, it's probably in the 10^15 (EB) or so, considering that every iron ion on the disk can "theoretically" be magnetized independent of every other, but quantum mechanics isn't going to let us do that anytime soon.
Cameron
"'State of the art' is a euphamism for 'doesn't work.' Otherwise the next idea out would be 'state of the art.'" |
