If you go to Wikipedia you note that RAID 100 is categorized as the nested array layout. There RAID100 is defined as RAID0 that is built on several RAID10 arrays. Thus it turns out that data stored on the disks in RAID100 is exactly the same as in RAID 10.
So, it is possible to get RAID 0 from RAID 100 array by excluding one disk in each mirror pair. And one more consequence is that RAID100 recovery boils down to RAID0 recovery given that you can get RAID0 form the member disks of RAID10 arrays.
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