Fine, that you succeeded at least. 1. You should never try to unplug any of the RAIDed hdd's unless the power of the system is completely off.2. My recommendation: Let the RAID array be a "basic disk". Since I am working with different RAID arrays I have always used Acronis TrueImage.All the best to you! Fernando Hi Fernando: Could you tell me why both of the physical disks in the RAID 0 array appear in the "safe to unplug" USB dialog box in the notification area? Is this some kind of glitch in the NVIDIA program? This is my first go at "software" RAID and this really seems odd and unsafe (if I accidentally unplugged one of the disks by accident while unplugging a USB stick for instance I would have to rebuild the array from scratch)... I use a Highpoint controller for a RAID 5 array on a different computer (my preference is definitely a seperate controller card for RAID)... Your thoughts on this would be appreciated... Tree