In RAID 0 since data is already split up due to striping, it could be more problematic than helpful. What I'm saying is when the HDD is defragged, it's essentially moving data. Now, if the data is split up, when the HDD tries to move it will it be moved to only one disk? Will it remain in a striped configuration? That's what really gets me.
this is wrong,
it will not un-stripe the information
do the defrag