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when will we have holographic hard drives?

D

dpopiz

Diamond Member
anybody know what the latest on holographic memory technology is, and when is the soonest we can expect mainstream holographic hard drives?
 
i beleive hes talkin about the technology where you use different wavelengths of light to save data in a crystal supposdaly like a terabite out of a 2 in x2 in cube something crazy like that
 
Last time I heard about this technology, they were still struggling with the sensitivity issue: if the cube they used to write the data on would shift just a micrometer, all data on the cube could not be retrieved.

Don't expect to buy one anytime soon.
 
I read an article on holographic memory in Scientific American YEARS ago now. I was at school still so it mustve been like 94-96 or something. Was interesting.

- seb
 
I remember seeing stuff on The Next Step on the discovery channel years ago about this. They actually had something working, big ass laser and a little crystal cube. They were storing uncompressed movies on it. They were saying 20 uncompressed movies on a 1in cube or something like that.
 
heh I'm such a retard...

for some reason I never thought of the idea of storing data in different wavelengths at the same position.. I was only thinking of moving the source laser around (which is obviously laggy compared to changing the colour, unless we can't change the colour of the laser/LED quick enough..

as for the accuracy, I wouldn't worry about that.. consider how accurate a head has to be to retrieve data on a hard drive! it's mind boggling to say the least, and not only does it work, but it does it in a quick (when considering that it's a mechanical process) time of down to 3 ms in SCSI drives.

the question for me is this, are we going to stick with the rotating disk idea? is there a quicker way of coming up with data (ie, reducing access times to microseconds or lower)? I guess the same question could apply to normal hard drives too.

all I can say is, the space holography provides is nice, and so are the transfer rates, but if I can't boot up a computer in something of a more acceptable time (say 10 seconds or less), then it's not a quantum leap forward to me.
 
I just can't wait for holographic hard drives not only because of their amazing speed, capacity (not that important for me), but because I assume they will be much more durable than our magnetic disc hard drives today. I've suffered way too many head crashes. Also, making a much more durable hard drive will probably be very nescessary for new tablet pcs and such.
 
I once read (and confirmed) that a hard disk reading head can be likened to a concorde flying a metre off the ground across a field and counting every blade of grass in a metre-wide strip.

And that was YEARS ago, like 1995 probably.

- seb
 
Do you guys remember the tech that was nick named pixie dust?
Is this the HD tech you guys are talking about?
I seem to remember that it consisted of particles in a vacuum that were polarised by a laser to be either negative or positive charged to store data.
 
I think I read at the IBM web site that pixie dust is a technology that they invented the reduce the susecptability of magnetic media to the superparamagnetic effect. The technology is making it's debut in currently shipping IBM Travelstar drives. (newest models only).
 
zephyrprime - maybe i got them mixed up? but i definately read somewhere about this cube that had a vacuum inside with some kind of dust that could be zapped by a laser to polarise individual particles and these could also be read by the laser.
Sounded to me way out at the time, but the writer of the article was convinced we would see this kind of tech some time in the future, and it also stated that a prototype had already been built. I think it might have been IBM.
If i can find the article i'll pop it up for you guys 🙂
 
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