The M-DISC – Long-term, but probably doomed

The recently released Millenniata M-Disc is an optical disc is designed to last for a thousand years (hence the name). Hitachi drives, which is 5x more powerful laser than conventional DVD writers. The plates hold the same amount of data than a conventional DVD is designed to be able to read it – but did not – the traditional DVD drive.

How do they do it?

lower layer on the basis of

produced commercially pre-recorded CDs and DVDs in a series of pits (holes) and lands (not hole) molded transparent polycarbonate disc. On top of that is a thin metal reflective layer. The laser shines through the bottom of the sheet and the difference between reflective of the pits should read data from the drive.

DVDs and CDs are both a form of optical discs, such as the data are read optically, a laser light.

pits are at the top of the polycarbonate layer, which itself is on top of a glossy metallic layer to reflect the laser. There is a layer of varnish to protect the glossy layer, and (sometimes) the top graphics.

recordable discs is much the same construction, but instead of pits molded polycarbonate layer is a layer comprising a photosensitive dye on top of the thin metal reflective layer. The laser writes the disc by changing the color of the paint. The drive reads the difference in the reflective paint instead of the pits.

new M-DISC uses a laser to etch pits instead of the recording layer changes the color of the paint. Then, the laser reads the difference reflective media data layer. Perhaps (as the disc is backwards compatible with standard DVD reader) is a reflective layer on top of that – or the data layer itself may be. So as you read the media, it works well, very much like a music CD produced, providing a physical difference reflective pits when a laser shines on it.

The manufacturer claims that these drives will be available based on thousands of years it is expected that the polycarbonate layer (the same polycarbonate layer that all CDs) should be a thousand years, but that the data layer, which they say "rock-like" (but a secret formula) constant, so long as it is protected by a polycarbonate layer. Hey, non-metallic "stone-like".

But never mind – they go a step further, allowing the media to test against other recordable media, and coming out from the front. Notably, the lack of production against a test CD.

How long traditional optical discs last? Depending on

paint is used, the shelf life of writable CD or DVD is usually brought to 10-100 years.

Kodak study says that "95% confidence interval, 95% of the population Kodak recordable CD data life more than 217 years when stored in the dark at 25 ° C, 40% RH, after picking up a Kodak PCD Writer 200. "

But he said, according to the durability of the changes in heat, UV light, moisture and possibly other environmental aspects. As a result, although the media is expected to last ten years (or 217) years, a number of CD-Rs are not after 3-5 years. Most manufacturers claim a shelf life of 5-10 years.

How long does a pre-recorded CD last?

Council Library and Information Resources (CLIR.org), storing the party of reliable data, says that expectations vary from 20-100 years, these panels. They also say that there is a consensus among manufacturers recordable CDs and DVDs ,, CD-R, DVD-R and DVD + R discs should have a life expectancy of 100-200 years or more in addition to recommended storage conditions and rewritable (CD-RW, DVD-RW, DVD + RW and DVD-RAM) discs should be a life expectancy of 25 years or more.

M-Disc sets, a lifetime of 1,000 years.

now, after data last thousand years (as in the books of the best of circumstances) high. But what about the ability to read the plates of thousands of years?

CD-ROM drives began to be popular around 1983. Although it is a bit expensive, they could not keep around 700 MB. About five years later, it drives commercialization, which can write to recordable CDs, and these drives became popular later in 1990. DVD market is only around 1996 and could hold about 4.6 GB of data – more than six times as much data in the same space as a CD. DVD-R, was released in 1997, which allows users to record their own DVDs. One bought cost me about $ 2000 to about 2000. As of writing this article (later in 2011), so the drive is about $ 40th A dual-layer DVD, which is capable of twice as much as conventional DVDs from commercially available starting in 2005, and a new double-layer DVD burner is today was about $ 50th Blu-Ray was commercialized in 2006, and up to 50 GB of data, and Blu-ray disc writer today can be purchased for about $ 120th

The moral of this part of the story that is changing formats .

looking more and more, faster and faster storage is becoming smaller, less costly forms of media. CDs were the dominant form of optical media storage for about 15 years – more or less in the practical life of the media. DVD optical media has become a way of life, but incompatible improvements have been made within ten years. The DVD looks to have a 15 or 20-year term – close enough to the life expectancy of a disc. It was a double-layer Blu-ray and DVD just a few years ago, and I think the derecognition of ten years.

I'm just trying to unload a closet full removable drive. There are a variety of optical, magneto-optical, tape and other removable media magnetic drives, such as Zip disk, SYQUEST and others. More than a decade ago, I was one of the data transmission services offered something old format currently available. Over the past five years, that part of the business fell. I tried to sell these drives on eBay and other manufacturers, and there is no market. Only a specialized market exists, and the manufacturers of these devices does not seem to unload them either. I can not give them away! Many of these newer formats such as CDs and some more recent than the DVD. At one time, some of these formats were nearly regulations, common as backup devices.

This form can be created Millenniata media that claim, and a thousand years is commendable. The media certainly seems to be much more durable than other optical media. But what drives technology (as already mentioned) is getting smaller, making it less costly form of more and more storage, more and faster storage media. Millenniata coming out of the gate, slower, more expensive media (presumably) expensive drives. if the technology history any guide, these drives and media will not be standard, and will be a much shorter run than 15 years. Something like ten years ago, these media can be just as easily visible and readable than 8mm film today. A hundred years from now no one will know what they are, let alone thousands.

His great YouTube videos and I like the logo, I think they are a little short, but exciting splash. It's great to fit on the table is broken or dipped in liquid nitrogen, but how many people really is the problem? The ExtremeTech website is certainly very excited about them, "M-DVD discs made of stone lasts 1,000 years," but in the end, the conclusion is similar to call my own.

The M-DISC is a neat idea, but ultimately not much more useful than the faster, the ability of the media and technology has been on the market for less. If this is the only product that the discs can be found intact in a hundred years, but I'm not sure whether the company will be.

Source by Steve Burgess

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