Six months ago, I built a system for myself that consists of an ASUS A8N-SLI mobo and four Seagate 160 GB SATA drives in a RAID 0+1 configuration, using the NVidia drivers bundled with the mobo. Everything worked until recently, when I started receiving alerts during system bootup that one of my drives has failed. I've checked all of the cables and power connections. I tried running Spinrite 6 but the program hung at the detect stage. I've since learned that Spinrite is unable to work with RAID 0+1 (at least that what I gathered from Steve Gibson's website). I need to know which drive is the faulty one so I can get it replaced. What's the best course of action?