You definitely want to create the raid using the card. When you first start your computer, the card bios, just like your motherboard bios, should show up on your screen. From there you can configure your raid. If you have difficulties, call the manufacturer and they should walk you through it. Does the Norco unit have 4 separate sata connections? If not, it is using port multiplication and it really doesn’t raid well. The 300 MB/sec bandwidth of a single data cable through which the port multiplier connects will hold back simultaneous transfers as you add more drives to it.I attempted to use Port Multiplication once but could never get performance out of it. I now use a 4 Port Raid in raid 5 and get about 200 MB/sec. I am sure I would be closer to 350-400 MB/Sec in raid 0 (raid 5 mirrors data so if a drive fails, you don’t loose your data, but it slows performance).