Is there protection from accidentally scratching a disc?
Yes. A polycarbonate cartridge shields the disc from dust and helps prevent the disc from being scratched. Even if a disc is accidentally scratched, robust error correction enables data on the disc to be played out. If the scratched portion of the disc happens to contain the file system, the data that allows access to all other data on a disc, a mirrored file system is located on the disc in a different physical location allowing the XDCAM system to access files.