nightcraw1er.488: Optical discs are ok. They can be scratched, warped, broken etc. And they have a pretty low storage capacity. For instance how many blue rays would it take to store 4tb? And is it workable when things update fairly regularly?
vsr: Why you store them yourself? Discs are not ok for the job of course. But for photos, documents they are better than hdds, in my opinion. I've written above why.
If you're so paranoid about it, you can download your collection file by file, compute theirs MD5/SHA{1,256,512} and delete them afterwards. In dire times you can download all the files from torrents (or any other source you'll manage to find) and make sure they are legit.
I do download everything from all the sources, but not just games, but saves, mods, help files etc. Whilst it may be possible to illegally download files, that isn't an ideal option, nor why would I want to if I have already gone through the process of downloading and checking? We are talking many hundreds of files. As for discs, well over the years I have used most things from 5.25 floppies to ssd, and currently best band for buck is hdd.
Spectre: Are there any better backup options than blurays or HDDs. Tape drives look like they're aimed at business but at least they won't break as easily as HDDs if they get a knock.
Tapes have their benefits, but they are moving out. Hdd's have come right down in price, and will again this year with the improvements to ssd's. Tapes don't have the random access that hdds have, plus they can take up more space, and hardware is an additional cost - you would need to buy the device.
JDelekto: Just out of curiosity, I noticed that people had mentioned "cloud backups". I remember reading something about some of the hard drive companies considering to offer secure cloud-backup storage, paid monthly like a utility in order to keep a backup of your drives (even as they change) offsite in the cloud.
Now, I was a little skeptical at first, but for a few years now I've been using DropBox for several years now, and to be honest, it's been pretty solid. Often I've used it to get to documents, videos, e-books, installation software, etc. not only from my phone, tablet and PCs, but I've used it when travelling on family's computers which had nothing more than a Web browser. Many years before that, I had to burn my data on CD and eventually thumb drives if I wanted to take it with me.
Now, while a different beast altogether than hard-drive backup, I think if they offered several terabytes of space for a reasonable monthly fee, provided extremely good encryption for data protection, a Web-based file-system to access and download data on demand, as well as some type of background restoration if you need to get a new drive, I would probably go for it.
Recovering from data loss (if you can recover things that weren't 'work product'), is typically many days of effort. Even more if your applications are digital downloads rather than physical media.
Sorry, trust issue there. I don't trust any online anything. Also, much like renting anything, at the end you don't own any of it, so its money down the drain in my view. At least I can use the hdds for other purposes at the end.