Slashdot Mirror
Next Wave Of Hard Drive Tech: Perpendicular Recording
angrytuna writes "New serial technologies are set to replace standard SCSI and ATA (Advanced Technology Attachment) interfaces over the next two years, even as hard-disk drive manufacturers prepare for an entirely new form of bit storage. Perpendicular recording will replace longitudinal recording in storage devices, placing bits on end instead of lying them parallel on the disc surface, thus dramatically increasing the possible storage density."
that there is such a crackdown on file-sharing. If they take that away from us, then whats the point of having that much space?
I wonder which side of the debate the hard-disk manufacturers are on?
If my drive bit is standing up, it must be hard. Ergo, hard drive.
C|N>K
the hard drive sideways... voila! perpendicular recording ;)
I am less concerned about the amount of stuff I can put on a hard-drive, and more concerned that the next time I boot up my computer, that stuff will still be there, as harddrives get more and more high-tech, the reliability seems to be taking a big nosedive, how will this effect the reliability of future drives?
;)
So what your'e saying is: The size of your "hard drive" doesn't concern you. You just want it to be in prime working condition when you do need it?
Forget that crap. We all know that isn't practical. Just use smaller fonts. That works today.
If they stand the 1's up, sure you can fit more because they're skinny. But 0's? They're wide...I don't see a significant amount of savings there...
So, does this mean that instead of looking like this:
0
1
All of my bits will instead look like this?:
_
-
I suppose you can squeeze a lot more of them together that way, but is that really much of an innovation?
Now, if they had figured out a way to fold the suckers, I'd be impressed.
11.0010010000111111011010101000100010000101101000
Due to the speed of the disk platters, and performance limitations in current magnetic head technology, most drives write their data "end-to-end", like so:
( --> direction of spin --> )
-0--0-00--0-0-0--0-
However, simply by rotating the read-write head by 90 degrees, we can write the data "perpendicularly", like so:
|0||0|00||0|0|0|0|
Obviously the "1" bits stack more efficiently in this orientation. For example:
||||||||
The greatest gains will be seen by data composed mostly of "1" bits, as they take less room to write than the "0" bits (when written "perpendicularly").
Further density improvements are expected with the change to a smaller font size for data storage too...
And to complete the joke see HD-Rosetta
See, there's a limit to how many bits you can store on a disk. I see. Because the area of the disk is limited I see. But you don't want a limit, you want more space. I want more space. But you can't have more space, because all of the bits are square they're square. and there's only so many square inches of surface. Only so much. Yes. Look at this disk. Radius 3.25" 3.25 It's a circle. It's round. Pie-R-square Pie-R-square So the area's limited. I see.
And the bits, they're almost square, because that's the way the manufacturers' engineers like them. They like squares? Yes. I see. Well, really they're not square, they're almost square. And how's that? Well, they're square sections of a round arc. Not square? But almost square. Almost square. I see.
So what do we do? I don't know. Well, we get a better packing fraction. Better packing fraction? Yes. That's the key. A better packing fraction. I see. And your data is round. Data is round Because the magnetic field is round. I see. And a square doesn't approximate a circle very well, does it? No. What does it better? A circle? Well, yes, but you can't do it with a circle, because circles bump each other. They bump each other? Yes, and they leave empty space between them. And we want a better packing fraction? Yes. So what do we take a cue from? I don't know. I know you don't know, but I'll tell you. We take a cue from the bee. The bee? The honeybee. He uses hexagons. Aaah. Hexagons. Yes, hexagons. They're all the future. The future? The future. The future. Yes, the future. Hexagons. Yes. That's where the money is. You're a nut.
Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
Don't make fun of my floppy. I know it's small, but I use it alot. :(
Life is not for the lazy.
If I can't download anymore mp3s why do I need more storage?
"It's so convenient to have a system where everyone is a criminal" - A. Hitler
If you look at a 1 or a 0 from the side, they're pretty big. But if you look at a 1 or a 0 from the top, they're a lot smaller! I guess a 1 will look like a dot, and a 0 will look like a line. That must be pretty easy to do, right? Pure genius!