I'm running Windows 7 64-bit and I have a WD 1TB SATA hard drive. My mainboard is an ASUS P6T and I know that it has built in RAID support that I currently have disabled. Although I regularly back up my hard drive with Acronis True Image, I've still become a bit concerned about the state of my hard drive. My question is this..... Although my system currently is a couple of years old and is not RAID configured, is it possible to add an additional hard drive and change it to raid? If yes, are there any rules that I would have to follow regarding manufacturer's, make, model, size, speed, etc. At this point, I'm a real RAID newbie so I don't have a clue where to begin. Can I please get some advice and direction from an expert?