Note: there are 100GB bluray discs now that can be recorded using consumer burners. There are also M-Disc bluray discs which are specified to last about 1000 ye

Note: there are 100GB bluray discs now that can be recorded using consumer burners. There are also M-Disc bluray discs which are specified to last about 1000 years (with some science and testing to back it up, even though no one tested it for 1000 real years obviously), because it uses a more hard "rock" layer to store the data instead of basically a color dye which is used on regular burnable discs (which last for 10 years according to some sources).