On my 2011 iMac 21" I have a Samsung 830 256 running Mac OS 10.8.3 off the Thunderbolt bus. My data volume is an eSATA RAID0, also off the TB bus, with symlinks to Apps, Docs, Movies, etc. The eSATA is provided by a new LaCie hub and the array is in LaCie 2bigs.
Once a day the array will...