Looks like the way to go to archive data on CDs and DVDs is to use Taiyo-Yuden media with software that implements Reed-Solomon codes like dvdisaster and PAR1/PAR2 in a jewel-box in a controlled environment.
QuickPar
Parchive
wikipedia: Parchive
All About PAR
linux.com: Use dvdisaster to protect backups on optical media
How To Choose CD/DVD Archival Media
pcworld.com: Burning Questions: Ten Tips for Durable DVDs
CLIR PUB121: Care and Handling of CDs and DVDs: A Guide for Librarians and Archivists


