timppu: I really don't understand people who use optical media for backups, in this day and age. They are far more cumbersome to use (try keeping your optical media archive up to date when e.g. GOG releases updates, do you reburn all the affected discs?), and in my experience burned optical media are anything but secure, no matter what kind of "high quality" optical media you use. They get bad in a few years.
I've told over and over how much of my data stored on optical CD-R and DVD-R had gone bad when I tried to recover them. Keeping the same data on some big ass hard drive is far easier (to maintain too, or to check they are still ok). Especially if it is an archive you also use and not just keep away; it is far easier for me to find some game or movie or a piece of music from one big fat hard drive, than from a pile of optical discs. Just enter a search key words in File Explorer and you find what you want instantly.
But to each his own I guess...
I see theres a need to explain myself :) people talk mainly about cds and dvds and i dont know if people have actually tried blurays. Even at entry level they are scratch proof and way more durable than cds and dvds and cheap. Ive almost never had a faulty bluray. When burning, i burn slow and verify and dont have to hang around for it. I do what i want. Play games etc. I wait for a game to be end of life which in cases like darksiders can be a couple of years, then i burn a final copy. Old dvds and cds i burn to bluray to save space. Ive had data loss on cds and dvds but ive become more careful and the last decade of Blu-ray's has made data loss negligible. Ive had hdds fail more often on me. If your using things like raid-1 and cloud and different locations then kudos to you. But optical media isnt as bad as everyone makes out