I have two identical hard drives and want to leave one as a mirror. I was thinking about raid 1 but then if some crazy virus decimates my system it'll be copied onto the backup drive too, and raid isn't a real backup solution anyway. Is there any software out there that will mirror my hard drive so that if the first one fails for some reason I can just boot off the backup drive like nothing ever happened (minus the time between the failure and the last backup of course), but not mirror right away (automatically backing up after a set period of time or waiting for me to tell it to back up or something)? Should I just stick with raid 1 because it's simpler? Any help would be appreciated!