24x DVD Burners Hit the Market

KingofGnG writes "There is some uncertainty on which will be the one, between Sony Optiarc and Lite-On, to market the first drive of such kind, but the fact is that DVD burners will once again exceed the maximum write speed limit going from 22x to 24x. Both companies will release the new optical drives between March and May, and though in practice the speed difference isn't amazing at all, the new breakthrough shows that firms continue to invest in a technology with a surprisingly long life."

Comments

Re:Moore's Law

[doi]

Because the disks fragment above a certain rotational speed. That's why you don't see 72x CD drives anymore. Go check Youtube you'll find plenty of examples.

Re:Moore's Law

[0123456]

Why does Moore's Law not apply here?

Because every time you double the rotation speed, you increase the force on the DVD by a factor of four; which means that before long the disk simply tears itself apart.

In fact, I thought that was supposed to happen not much above 16x, so I'm surprised they've got it working this fast.

Re:Moore's Law

[evilviper]

I thought they would have a cool multi laser burner by now to up the write speed

Not likely. It's tricky enough having one laser doing "burn-free" and picking up where it left off... It's not going to happen with multiple laser, let alone improve speeds.

or move the laser instead of the disc? You can build the laser stronger and rotate it at 10,000 rpm if you like.

You can rotate the laser, but then you have MANY problems to address. Highly precise hinged wire harnesses, an extremely heavy rotating mount that can keep the laser perfectly steady, and continual centripetal compensation as the laser lens moves to focus the beam.

It's possible, but very difficult.

And no, you can't just rotate it at 10,000 RPMs. The laser mechanism won't take the force any better than the discs do. It's technically possible, but would be ludicrously expensive.

And all for what? So you can buy one slightly faster disc burner, rather than hundreds of slightly slower disc burners, running in parallel.

Re:So last century!

[meatmanek]

When CD-ROMs were new, most people's hard drives were a fraction of what could be held on a CD. The first computer my family had with a CD drive had a 250 meg hard drive. When you could start burning CDs for realistic prices, the average hard drive was probably a few gigabytes; you could back up all your data on two or three CDs.
When DVD burners became available, hard drives were usually a few dozen GB; it took somewhere around 10 DVDs to back up all of your data.
When Blu-ray burners became available, it wasn't uncommon for hard drives to be 500 GB, so 20 Blu-rays to back up your data.

Yes, Blu-ray burners will become cheaper, and yes, blu-ray discs will become cheaper, but by the time they do, we'll be seeing 2 and 3TB hard drives for $100. The $/GB of Blu-ray might drop below hard drives for a while.

Then, hard drives will continue to advance with Moore's law, and by the time the next generation of optical discs come out (which will probably be 150 GB/layer, based on the ~5x ratio of each disc type to the previous), you'll be able to buy 2-digit terabyte hard drives for $100.

Conclusion: Blu-ray is already obsolete, at least for data archival. Hard drives are going to win for the next few years.