We've talked about this before, but as I recently had a near disaster, I thought I'd revisit this topic.
I've got a 24 inch iMac that I love. Unfortunately, its held back by a 500gb hard drive that isn't quite enough for my programs, expanding movie collection (I've started ripping my DVD's) and my photography.
Once I got down to my last 30gb, it became clear that something was going to have to go. I bought a Western Digital My Book Studio edition because it had firewire 800 support. I copied all my movies over and it worked perfectly... for about 3 months. Then overnight it quit on me. All my movies were gone!
I picked up a $30 usb hard drive casing, and plugged it in... thank goodness, it was the casing that failed on my MyBook... not the drive itself. Lesson learned though: No more storing all of my data in one place.
Here's the rub though: I've got to be able to store this stuff off my computer's main drive AND be able to duplicate it. This is further complicated by the fact that I'm increasingly using my lap-top for a lot of work, and the copying of files back and fourth is getting messy. So I've opted to use a Drobo connected to my airport extreme as a sort of low end NAS. Drobo makes sure you have redundancy of all your data in at least 2 disks. This mostly solves my problem, but just like any single device, the Drobo itself can still fail.
So my question to you is this: What's the best way to back up my drobo (Hardware & Software).
I'm thinking for now I'll use my external hard drive casing to clone it every so often (Say twice a month). That way I can take it to the office and always have a off-site backup. I just don't know what the best way to go about it would be. 500gigs is a lot to copy all at once, I'd prefer to just copy the updates. Will time machine work with external disks?