What is the shelf-life of a CD-ROM?
If a CD-ROM is not manufactured properly, the lifetime can be very short, perhaps only a few years. This can happen if the edge of the disc is not properly sealed, and oxygen reaches the metal surface. If the disc is manufactured properly, it will last a very long time. Most CD-ROMs should last for more than a human lifetime. Philips has proposed new standards for testing CD-ROMs that are expected to result in discs that will enjoy a life span of more than a thousand years. For more information see Fox, Barry “CD Makers Perform in Unison to Stop the Rot” New Scientist 134(1815) (April 4, 1992):19. The laser used in a CD-ROM drive is very low power, and does not harm the disc in any way. Reading the disc will not shorten the lifetime.
