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[TS]Pioneer reveals 400GB Blu-ray disc - Page 2

post #11 of 18
Quote:
Originally Posted by zorpnic View Post
With the speeds they write, it's not exactly easy. They need to pick up the write speeds to that of a normal CD, if not DVD, and doing that would cause instability to the disc itself. That, and writing 400GB would take about 8 hours, and after, you wouldn't be able to touch your disc drive without the feeling your hand would be heavily burnt from the use of the drive.
Wow, you really gave this some thought
    
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post #12 of 18
Quote:
Originally Posted by zorpnic View Post
With the speeds they write, it's not exactly easy. They need to pick up the write speeds to that of a normal CD, if not DVD, and doing that would cause instability to the disc itself. That, and writing 400GB would take about 8 hours, and after, you wouldn't be able to touch your disc drive without the feeling your hand would be heavily burnt from the use of the drive.
Proof? I would like to read up on this. Or are you referring to the fact that if a disc spins too fast it will warp and break apart? Also, bear in mind that although a DVD may only write at 18x, it still is writing more data at 18x than a CD writes at 52x. The "x" is the initial data transfer rate for each of the media, and is not consistent between them.

http://en.wikipedia.org/wiki/DVD#Technology and
http://en.wikipedia.org/wiki/Blu-ray#Recording_speed

As you can see, DVD is some 9 times faster than CD write speeds, and the Blu-Ray medium is even faster.

I don't know where you get your number of 8 hours from, because that is simply wrong. If a 50GB disc takes 30 minutes with current technology (a 6x drive), a 400GB disc will not take 8 hours, but more like 4 hours.
Edited by stargate125645 - 7/7/08 at 1:59pm
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post #13 of 18
Holy crap! That's like some über-storage right there.
 
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post #14 of 18
Wonder what the price tag for 1 disc would be?! Would be cool if it were re-writable. Ha, can you imagine how long it would take to burn one of those.
Edited by Diabolical999 - 7/7/08 at 12:21pm
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post #15 of 18
Quote:
The technology provides 25 GB of room on each layer, bringing the capacity of one 16-layer disc to 400 GB. While the 25 GB per-layer capacity is equivalent to what Blu-ray provides, Pioneer did not say which technology its new discs are based upon and did not even mention whether blue laser or red laser technologies were employed. However, Pioneer stated that the 16-layer discs would be “compatible” with current BD discs.

Sony previously noted that Blu-ray could be scalable to up to eight to ten layers or 200 to 250 GB. However, multiple layers weaken signals from each recording layer and the industry has found it to be increasingly difficult to receive clear signals in a stable manner within multi-layer discs due to crosstalk from adjacent layers and transmission loss. Pioneer claims it has solved this problem using a disc structure that can reduce crosstalk from adjacent layers as well as a wide-range spherical aberration compensator and light-receiving element that can read out weak signals at a high signal-to-noise ratio in the optical pick-up mechanism.
http://www.tgdaily.com/html_tmp/cont...38271-135.html
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post #16 of 18
Quote:
Originally Posted by zorpnic View Post
With the speeds they write, it's not exactly easy. They need to pick up the write speeds to that of a normal CD, if not DVD, and doing that would cause instability to the disc itself. That, and writing 400GB would take about 8 hours, and after, you wouldn't be able to touch your disc drive without the feeling your hand would be heavily burnt from the use of the drive.
Now that is extreme
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post #17 of 18
what are speeds like when reading and writing to normal blu-ray??? I havent even gone near them yet 2 pricey and ive heard a lot about them being slow... I think that high speed solid state memmory will be the thing of the future - optical stuff is too risky - easily scratched and it ages resulting in data corruptiong (anyone have a cdr from 10 years ago perhaps - see if it still works 10 years from now...)


Solid state is where we need to go - no mechanical issues from the little motors - no aging and no scratching...

Perhaps im a bit opinionated lol
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post #18 of 18
Quote:
Originally Posted by pcguru000 View Post
what are speeds like when reading and writing to normal blu-ray??? I havent even gone near them yet 2 pricey and ive heard a lot about them being slow... I think that high speed solid state memmory will be the thing of the future - optical stuff is too risky - easily scratched and it ages resulting in data corruptiong (anyone have a cdr from 10 years ago perhaps - see if it still works 10 years from now...)


Solid state is where we need to go - no mechanical issues from the little motors - no aging and no scratching...

Perhaps im a bit opinionated lol
The answers are often there if you read the thread...
http://www.overclock.net/hardware-ne...ml#post4152732
Edited by stargate125645 - 7/7/08 at 2:00pm
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