CDs and DVDs Not So Immortal After All

CDs and DVDs Not So Immortal After All is an AP article on “CD rot,” a gradual deterioration of the data-carrying layer. It’s not known for sure how common the blight is, but it’s just one of a number of reasons that optical discs, including DVDs, may be a lot less long-lived than first thought.

DVDs are a bit tougher than CDs in the sense that the data layer (or layers — some discs have two) is sandwiched in the middle of the disc between two layers of plastic. But this structure causes problems of its own, especially in early DVDs. The glue that holds the layers together can lose its grip, making the disc unreadable at least in parts.

Update: 05/06 08:17 EST by B:Fixed the link, thanks Steve.