voxson, I believe what he meant is that he has an additional single IDE drive, in addition to his RAID0 drive array. That is, that single IDE drive isn't connected to his RAID0 drive array, hence is not a part of it. In this case, the benchmark will test that single drive, rather than the RAID0 drive array, according to him.
In any case, this benchmark is still grossly inaccurate and pretty useless, even compared to Sisoft Sandra.