Simulate disk activity?

[-=Antimatter=-]

Are there any freeware programs out there that will simulate disk activity (intermittent, active, max load) that I could loop on a system for a couple of hours? I need to test out the power consumption of a box with multiple hard drives under a basic everyday intermittent load. The test would have to last for ~2 hours. If I can't find one, I'll have to script something myself.

Thanks

 

[sabregen]

IOMeter