Don’t conflate a mastered CD with an aluminum data layer with a recordable CD-R or CD-RW, which use organic dyes that have a significantly shorter lifespan.
A properly manufactured CD can last 200+ years if it’s stored in a dry environment free of UV exposure and high levels of moisture.
Even a quality CD-R can’t really be expected to retain all of its data integrity for much more than 10 years.
Obviously no one’s seen it happen first hand. It’s a projection based on what’s known about the materials and how they’re made. Burned CD-R’s have definitely been out in the real world for people to learn how short their lifespans can be, though.
Nobody could “prove,” for instance, that the Voyager 1 could stay operational in deep space for 47+ years when it was launched in 1977, but the engineers could still predict and they launched it anyway, and it did. I don’t think your argument really holds water.
Yeah good ones allegedly last 200 years if stored correctly. Cheap ones are 5-10. 20 can be expected for quality CDs stored correctly.
But no matter the claimed quality, it’s a gamble. Our local library had a lot of 10-20 year old CDs that had developed microbubbles.
5 years is low range for CDs, but common enough that you should be taking backups for anything you keep longer.
Don’t conflate a mastered CD with an aluminum data layer with a recordable CD-R or CD-RW, which use organic dyes that have a significantly shorter lifespan.
A properly manufactured CD can last 200+ years if it’s stored in a dry environment free of UV exposure and high levels of moisture.
Even a quality CD-R can’t really be expected to retain all of its data integrity for much more than 10 years.
Sorta doubting whatever study found proof that a CD can last 200 years…
Obviously no one’s seen it happen first hand. It’s a projection based on what’s known about the materials and how they’re made. Burned CD-R’s have definitely been out in the real world for people to learn how short their lifespans can be, though.
Nobody could “prove,” for instance, that the Voyager 1 could stay operational in deep space for 47+ years when it was launched in 1977, but the engineers could still predict and they launched it anyway, and it did. I don’t think your argument really holds water.