I have a couple days until I can put the rest of my computer together so I am doing individual tests on the hards drives on a known good computer. I am doing individual tests on each drive to stress them into failing if they are faulty before I try to use them all together. I am using winthrax currently. Is there anything else that I could automate for several hours to do disk ios? Also I am testing 4 HDs at a time if possible. I have 8 total so doing the first 4 right now.