I'm curious what folks use for their archival backup media. I have a fairly redundant system at the moment, but am planning on opening a safety deposit box (not just for photos but might as well put photos in there too).
Currently, I have a HDD array with parity, which has saved me a couple times already from hard drive failure. That's where I store the bulk of my collection. Every so often, I copy the entire thing onto another hard drive which gets stored in a drawer, and I keep at least 2 backup hard drives like that. I used to also keep optical backups on DVD, but doing so now would be far too time consuming due to the size of my library. So I am looking into BluRay discs right now, to calculate just how many I would have to burn in order to create a backup of my library; and also to learn what BluRay media is of a high enough quality to be considered archival or near so. I like the idea of storing my data on different types of media, magnetic and optical, and in several locations.
I also plan on creating MD5 checksums for all my files as well. That way if one backup gets corrupted, I will know and be able to restore from a different backup instead.
So what media do people use for archiving their libraries? If anyone is using BluRay discs, do you have a brand/model/technology that you recommend or understand to be of the best quality for this purpose?