dmraid is pretty cool. My desktop has 4 disks configured in a "fakeraid" RAID 10 setup. My desktop dual boots Debian and Windows. I can use/share that RAID 10 volume under both Debian and Windows just as easily as I could a single disk. I use half of the volume for my Windows Steam library and the other half for my Linux Steam library. I didn't have to do anything special under Linux. dmraid just made it magically work.