Why on earth would anyone want to backup their precious data to something like an optical disk is beyond me. Yes, I have done so in the past, maybe 5 years ago I was still burning data to DVD. Now ? I use hard-disks. Safer, cheaper, quicker, and generally just better. I don’t know anyone with a blu-ray burner, as the cost per gigabyte is just stupid - you’d have to have more money than sense to waste your money on optical junk. I could never truly trust my data coming off an dvd / or any other optical format.