this post was submitted on 31 Dec 2024
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Some estimates put conventional CD and DVD lifespans at 25 years, however they can last decades longer than that if they are stored away from UV light, and stored in a moderate temp and humidity controlled location. Their lifespan also largely depends on the quality of the manufacturing process from the factory.
Under similar conditions, blu-rays are estimated to last around 100 years, and blu-rays that use non-organic dye layers (such as M-disc) can reportedly last 1000 years or more.
As moisture finds a way between the layers, the disc will degrade. Too much bending or flexing of a disc will encourage separation of the layers.
Source: am a big optical media nerd