Using a Buffalo TeraStation Live HS-DHTGL/R5 with my recently upgraded 1TB Western Digital Caviar Green drives to store. Works very well using previous OEM Samsung 250GB drives for 3 years continuous (hence I figured it's about time to retire those drives). I always set the system run on RAID 10, safe and fast at the expense of half that storage capacity. With the new drives, the NAS operates almost silently and with less heat due to the drives' low power consumption (each drive save me about $10 per annum in terms of electricity cost, there are 4, so total $40/yr)