SYYLEX has developed a technology and manufactured a corresponding storage medium which allows digital data to be archived for centuries:
Data is stored as pits or grooves on a glass disc in a similar way to the cuneiform script written in stone by early cultures.
These discs have a storage capacity of approx. 5 GB and can be read by all commercially available DVD drives without any problems.
The glass used as a substrate is a special kind of glass which, due to its durability, is deployed in the chemical industry to store and transport aggressive reagents. The reflective layer consists of a metallic alloy which has been extensively tested for durability. This is only used to render the GlassMasterDisc compatible with commercial DVD players. The bond between the two halves of the disc has also been carefully tested for potential ageing. Because the metal and the bond are almost entirely enclosed by glass, environmental factors can have hardly any impact.
By virtue of design therefore, the glass disc is extremely resistant to all conceivable environmental factors such as humidity, temperature, radiation, electric and magnetic fields, as well as mechanical and chemical stresses (e.g. scratches or cleaning agents). The bond between the two halves of the disc dramatically reduces the product’s susceptibility to breakage.
So in theory, even if the reflective layer was damaged, the data could be retrieved if absolutely necessary. Cool. Still doesn’t work around all limitations of optical media, but between this and products like M-Disc there should be some (niche?) options for long-term optical media archival. Complement that with magnetic and solid state storage, and you have a decent chance at not losing stuff.
Hmm interesting too. I like the idea of the M-Disc but heard that the disc can actually be scratched really easily, which is kind of silly.
This sounds good though. But they need to look at BD-RXL. Right into the future, not this crappy 5GB DVD crap. DVD is dead as far as storage capacity goes.
[QUOTE=cd pirate;2740100]Hmm interesting too. I like the idea of the M-Disc but heard that the disc can actually be scratched really easily, which is kind of silly.
This sounds good though. But they need to look at BD-RXL. Right into the future, not this crappy 5GB DVD crap. DVD is dead as far as storage capacity goes.[/QUOTE]
Yeah I did not buy-into M-Disc until the BD-25 came along this spring.
Haven’t heard of these being “scratched really easily” but I only used them for archival storage anyway i.e. burn/test then put in a jewel case and into the safe/fire box.
Blu ray discs and some special DVD-R (hard coat etc) have a scratch resistant coating. So you can wipe the crap out of the disc on your shirt and the disc will not show even the slightest little scratch whereas regular DVD and CDs get loads of tiny little nicks in them if you do that.
That’s why I wondered why the M-disc never used hard coatings. I suppose they might on their Blu ray discs unless they wanted to create the biggest oxy moron idea ever. Example - Disc that lasts 1000 years… provided you literally never accidentally touch the recorded surface!
I will have to dig-out one of my burned M-Discs and see about this. I recall thinking they were of extraordinarily high quality but I never touched the surface, or dropped one, or laid it face-down on a table or anything.