Posted by: Anonymous
[ip: 75.69.85.120]
on April 18, 2008 08:32 AM
Better read up on this... the surface of any "disc" is of different quality and can be also inferior due to batch production mistakes. I know of no rating for DVD or CD writable discs that in reality last very long at all.
If you are keeping mission critical data on DVD or CD disc for very long, then you need to read a bit more about how some serial number batches of discs are better than others (there is a whole community that follows this). The only DVD or CD media that will last a long time is if the media is "pressed" meaning that the data on the disc lives a mechanical type of lifetime on the disc.... A CD burner or DVD burner does not do this... it only takes the disc and changes the chemical nature of the surface to make it readable in a binary way... and it is a well know fact that the chemical surface on the burned CD or DVD will break down (and some disc surfaces, depending on the quality of the disc, simply will not last very long at all.... certainly not even close to 30 years... and if exposed to sunlight might not last 2 months.
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Data for 30 years? Nope.
Posted by: Anonymous [ip: 75.69.85.120] on April 18, 2008 08:32 AMIf you are keeping mission critical data on DVD or CD disc for very long, then you need to read a bit more about how some serial number batches of discs are better than others (there is a whole community that follows this). The only DVD or CD media that will last a long time is if the media is "pressed" meaning that the data on the disc lives a mechanical type of lifetime on the disc.... A CD burner or DVD burner does not do this... it only takes the disc and changes the chemical nature of the surface to make it readable in a binary way... and it is a well know fact that the chemical surface on the burned CD or DVD will break down (and some disc surfaces, depending on the quality of the disc, simply will not last very long at all.... certainly not even close to 30 years... and if exposed to sunlight might not last 2 months.
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