Adam Goryachev [off-list ref]
I guess it depends on your definition of raid 10... In my experience it means one or more raid 1 arrays combine with raid 0, so if each raid 1 arrays had 2 members, then it is either 2, 4, 6, etc for the total number of drives.
indeed. What I want to use is linux raid10 which can be used on
2,3,4,5, etc of disk drives. so it is unlike hardware raid 10.