How Long Will a CD-R Last?
When CDs were introduced they were touted as indestructible. Recordable CDs (CD-Rs) give the impression of similar permanence, and manufacturers claim lifespans of ten or even 200 years. But Dutch magazine PC-Active recently tested some CD-Rs stored for just 20 months and found a number had become unreadable.
Of course, many people have kept CD-Rs for much longer and had no trouble, but if you save precious documents or photos on CD:
- Use decent, branded CDs. The quality of the dye layer that records the data affects longevity.
- Avoid seladhesive labels: there’s evidence the glue may harm the dye or reflective layers. Use felt-tipped pens and restrict writing to the central hub.
- Store CDs in protective "jewel" cases in a dark, cool, dry location.
- Make multiple copies of important CDs.
- Copy data to fresh CDs (or new formats as they come along) every three to five years.
