General :: Error-correcting Filesystem For Use With DVDs?

I occasionally need to burn about 1 Gbyte of files to a DVD, and transport them to a friend's house. It's really annoying to discover that some of the data is corrupt when I get there, due to a scratch on the DVD.I have tried copying the files to the DVD several times,creating a new directory for each set. It usually means at least one of every file is correct, but it's really annoying to have to verify every file is correct with md5sum or similar utility.What I want is a filesystem that will automatically give me the redundancy I want, even if it means I only get 1 Gbyte of storage space per DVD. When I read the files back, it will automatically fetch multiple copies of the file, and give me the correct data - sort of like the way RAID works, but with all of the data on the DVD. Does such a filesystem exist? Perhaps I could create three 1Gbyte partitions on my hard drive, mount them with raid, store the files, unmount the partitions, and then copy images of the partitions onto the DVD (mount them later with -o loop,ro options).