Interesting, I didn't know Windows has a backup feature. I'm going to look more into that, thanks.
You know RAID0 isn't probably worth it for me, and I was wrong with RAID5, and RAID10 is way too expensive. And after reading about RAID1, it seems that if there is an error the error will just be duplicated so it's not really a backup IMO.
I'm going back to my original strategy to just get two hard drives (either 2x1TB or 2x500GB), one primary for use and the second just to store a backup image I can restore easily if the primary drive fails.
Question is what is a good way to create that back image and how long will it take. Is it quick like a 5 minute process or would it take hours to backup each night?
There are many backup programs that will do just what you are asking, I personally like Acronis True Image.
One thing you should always remember though, no matter what you have heard, RAID of any kind is not a backup. RAID is for redundancy, not backing up. If you delete a file, it's gone. If you get a virus, it affects all your drives. If you are messing around and you format the array, your files are gone. The only thing RAID offers some protection against is a drive failure. If you are running a server, and a drive fails, the server will continue to operate off the back up drives, but even people who own servers with expensive RAID arrays understand that RAID is the very worst form of backup there is. Drive failure in it's self is only a very small percentage of the reason people lose data.