Old 02-04-2010, 07:04 PM #1
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Default Laser Core HDD 10TB

Hitachi Aims for 10TB Drives With Laser Heat - Tom's Hardware

20nm, must burn GOOOOD

Pretty much if the disk is hotter when read it can pack in more data.
I wonder how a 20nm laser will heat the almost perfect mirror like disk in a hdd?


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Old 02-04-2010, 08:50 PM #2
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Default Re: Laser Core HDD 10TB

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Originally Posted by milkman View Post
Hitachi Aims for 10TB Drives With Laser Heat - Tom's Hardware

20nm, must burn GOOOOD

Pretty much if the disk is hotter when read it can pack in more data.
I wonder how a 20nm laser will heat the almost perfect mirror like disk in a hdd?
it can heat a shiny surface like that because it's 20nm and therefore easier to focus smaller and absorb. Downside is that it's 20nm. That's close to being x-ray!!

and on focusing lasers onto hard drives, have you ever tried it? It's really neat to focus the laser onto like, a piece of dust you can barely see, and yet the reflected image on the wall is the size of a poster.
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Old 02-06-2010, 11:45 AM #3
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Default Re: Laser Core HDD 10TB

3D optical data storage - Wikipedia, the free encyclopedia and http://en.wikipedia.org/wiki/Holographic_data_storage is where its at
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Old 02-06-2010, 03:17 PM #4
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Default Re: Laser Core HDD 10TB

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Originally Posted by milkman View Post
I wonder how a 20nm laser will heat the almost perfect mirror like disk in a hdd?
mirror-like at which wavelengths?
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Old 02-06-2010, 06:59 PM #5
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Default Re: Laser Core HDD 10TB

my wavelength brah
but 20nm isn't in my range maybe supermans.
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Old 02-06-2010, 09:10 PM #6
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Default Re: Laser Core HDD 10TB

where are you getting that the light is 20nm as far as I can tell the width of the beam is 20nm
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Old 02-06-2010, 10:23 PM #7
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Default Re: Laser Core HDD 10TB

nm is a wavelength in which light occupies.
It could also be a measure meant but i think its referring to its wavelength
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Old 02-07-2010, 01:57 AM #8
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Default Re: Laser Core HDD 10TB

There's not way they could measure that, a nanometer is ONE BILLIONTH of a meter.
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Old 02-07-2010, 02:09 AM #9
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Default Re: Laser Core HDD 10TB

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Originally Posted by randomlugia View Post
There's not way they could measure that, a nanometer is ONE BILLIONTH of a meter.
Use the laser to burn something and then use an electron microscope, it can be done. Anyways, my guess says that it's the wavelength.

EDIT: It has to be either the wavelength or both, it cannot be the width and have the wavelength of something larger(e.g. Blu-ray), because that's just plain impossible.

Edit2: While lasers are awesome, the data storage they give is nothing in comparison with Nanotechnology
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Old 02-07-2010, 02:55 AM #10
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Default Re: Laser Core HDD 10TB

Quote:
where are you getting that the light is 20nm as far as I can tell the width of the beam is 20nm
nm is the wavelength of the beam. Divergence is the width of the beam, measured in mrad's.
Quote:
There's not way they could measure that, a nanometer is ONE BILLIONTH of a meter.
They can divide the nm X1000, if necessary.
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Old 02-07-2010, 03:03 AM #11
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Default Re: Laser Core HDD 10TB

Width is not the same as divergence. It would depend on what point in the beam you measure to get the width, while the divergence always stays the same.
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