i am just backing up my data from cds und dvds on my network raid drive. i do not know how long this one lives, but a lot of optical media i have has gone faulty or even completely unreadable, and they are mostly just a few years old. in a lot of cases no physical damage is to be seen. dvd drives ceased to function in my computers one by one, but since burning is such a painful procedure i do not care for replacement anymore. do i need to say more?