Before revision: Optical media - CD, DVD, Blu-ray, M-Disk Write-once optical media, such as CD-Rs and DVD-Rs, typically contain an organic dye that distinguishes data reading from data writing based on the dye's transparency along the disk.Library of Congress, "NIST/LC: Optical Disc Longevity Study," URL Conventional CDs and DVDs have finite shelf-life due to natural degradation of the dye; the newer M-DISC uses in-organic meterial technology to produce moluded DVDs and Blu-Rays (upto 3 layer 100GB BDXL) with a claimed lifespan of 100-1000 years if stored correctly with most BD & BDXL rated read/writers enabling the higher power mode for the M-Disk format after 2011.
After revision: Optical media - CD, DVD, Blu-ray, M-Disk Write-once optical media, such as CD-Rs and DVD-Rs, typically contain an organic dye that distinguishes data reading from data writing based on the dye's transparency along the disk.Library of Congress, "NIST/LC: Optical Disc Longevity Study," URL Conventional CDs and DVDs have finite shelf-life due to natural degradation of the dye; the newer M-DISC uses in-organic material technology to produce moluded DVDs and Blu-Rays (upto 3 layer 100GB BDXL) with a claimed lifespan of 100-1000 years if stored correctly with most BD & BDXL rated read/writers enabling the higher power mode for the M-Disk format after 2011.