I recently encountered an issue with my 2011 Mac mini Server when under heavy load. I have a LaCie Thunderbolt Little Big Disk modded with dual OCZ Vertex 3 SSDs, and LaCie Slim Bluray Writer all connected when archiving my Bluray collect. I typically use DVDfab Bluray Copy and Handbrake simultaneously. The CPU load is typically very high on all Cores. The problems occur when I connect a portable FW800 drive to backup the MKVs in the background while doing the above. The systems locks up completely. I have to unplug the Mac mini from the outlet and wait 30 seconds to get the Mac mini to boot. Is this behavior a result of too much power draw? Is it normal?