Hi, I had two hard drives in my N4100PRO and one failed so I replaced the drive with a new one. However, the failed drive was under warranty and I had a new one mailed to me so I now have 3 drives. I'm considering buying a 4th drive and expanding the raid to raid 10. Looking at the manual it looks like the N4100PRO is capable of raid 10 but the expansion/migration guide doesn't show it as available by expanding from either raid 1 or raid 5. Does anyone know if it's possible to migrate from raid 1 or 5 to raid 10? Seems like it should be.