Acomdata and LaCie make fanless drives where the whole casing functions as a heatsink. I have two Acomdata 250s, an Acomdata 350 and a LaCie 500gig, and they all work flawlessly, even if left on for long periods of time. Buy one for your Poser runtimes and one as a backup data drive, because unless it is in more than one place, your data is one electromagnetic pulse away from oblivion.