One of the legs of the main mirror of this box was starting to throw SMART errrors, and that makes me nervous, even when I can remap the sectors.  So when life gives you lemons, make lemonade!  I replaced the main root mirror with a couple new drives – 7200RPM seagate 250G laptop drives, on sale from newegg, the pair $90 with free shipping.

And now, the Kill A Watt [amzn] says the box uses only 41W, down from 51W.  That’ll save 7 kWh/month, 88kWh/year.  Not bad!  (though far from paying for themselves).  The 2 old drives are still there, waiting to be spun up when somebody wants to listen to the music on them.