I may decide to pick up the battle of advocating for the use of external hard drives instead of Blu-ray discs for data backup.
External hard drive:
I can get a commercial (consumer) 1TB hard drive for about 150 bucks, and backing up consists of merely "dragging and dropping" the filesystem. The media is portable (if a bit larger) and reliable. I can have two physically separated hard drives for added redundancy (total cost: about $300).
A 50GB disc costs 35 dollars in Amazon. I also need to transfer the files to the computer which has the burner, then create the images, then write them, and then store a multitude of this guys in boxes, keep a catalog, and make sure whoever takes one places it back.
Our data is critical (I guess like everyone else's).
So, if you ONLY have these two alternatives, which one would you take?