Reply 40 of 49, by nemesis
Jaz drives aren't optical, they're rigid platter drives.
Of course you are correct there, my friend. I was thinking of the ZIP CD drives for some reason. But I still don't consider a platter disk a "floppy".
(Thank you for the correction).
And don't forget the syquest SkyJet drives.
In fact I did forget about them. They were a great product with poor market timing. I'm tempted to make a cartridge/platter based machine some time in the future... well, after I get some money (I love the dentist when I have a major toothache but I hate how much it costs... ok. Long story there.)
As you said they're using compression techniques and for freespace estimation they simply "guess"
that they can compress everything down to 50% size (which is a quite optimistic guess).
I never liked the "guesstimation" that some of the compression companies marketed with... feels too much like lying.