Yikes, Writable DVDs/CDs are not permanent, far from it! The dyes in writable DVDs degrades over time. If your storage requirements are more than a couple of years you might have already experienced some pretty major data losses.

> Yikes, Writable DVDs/CDs are not permanent, far from it! The dyes in writable DVDs degrades over time.

They do degrade, but a "couple of years" is pessimistic. My earliest CD-Rs are from 1994 and they're still good.

CD-Rs will last longer than DVDs because the pits being written are larger. Further, audio can experience more degradation without perceptible impact.

I've had DVD-Rs fail in 2 years.

The type of DVD matters, of course. Here's a handy guide:

https://www.canada.ca/en/conservation-institute/services/con...