Looking for a backup solution (tape/nas/san...)
I'm looking for a backup solution. I've been using a custom python script to backup several servers, local and offsite (linux and windows). It's working OK. I then burn the backups to DVDs and store them in a locker in the nearby bank.
But now it's getting ridiculous. I'm receiving something like 300GB to 500GB of backups per month. That I have to burn to DVD-R.
Software wise I'm moving to Bacula with a strong MySQL backend. Now that should take care of everything and be easier to documents.
It's on the hardware side that I'm not too sure.
1. Dual layer DVDs don't hold enough data
2. Blu-Ray/HD-DVD aren't out yet and it's too soon to adopt in a production environment.
3. Tape drive? I don't have any experience with them, are people getting rid of them, or are people still buying them?
4. NAS/SAN? Is the price worth it? I know that restores are super fast compare to other solutions, but on the other hand I can't store it in the bank. What if we get rob/fire/disaster?
Anyway, I'm just looking for opinions, experiences, anything that can help me take a wise decision.