KB 10294 Does Promise implement RAID 0+1 or 1+0?

As it is understood, Promise’s implementation is 0+1. However functionality is that of RAID 1+0, for example: 
When one disk in the striped set is forced offline or fails, its disk mirror will take over IO, it is not treated like a RAID 0 stripe under the mirror.  Though highly improbable, it is possible to lose 10 drives in a 20 drive RAID 0+1 or 1+0.  Functionally the two are synonymous within the Promise RAID architecture.

RAID 10 provides high availability by combining features of RAID 0 and RAID 1.