You are over-using it. Storing anything on a raid0 that will make you very unhappy if the data is lost, like projects, it not advisable. Media is OK on a raid0, because you can always recapture, but projects on which you spent days or even weeks of intensive editing getting lost is disaster. Raid0 is actually Aid0, because there is no redundancy, so it is a kind of band aid. Also do not store programs on a raid0, these are better placed on your boot disk.
Harm Millaard