Hi, Relative newb here... I currently have two iMacs, one mid-2011 running the current OS, one mid-2008 running 10.6.8. I have legacy music recording hardware that requires me to keep a computer on 10.6.8. However, the old iMac does not really have enough processing power to run all that smoothly. I'm looking at the following computer on Craigslist: Apple Mac Pro 5,1 MC561LL/A 2 x Intel Xeon E5620 (2.4GHz) 40GB DDR3 1066MHz RAM (Bought from OWC) ATI Radeon 5770 Apple RAID Card (Needs new battery) 2 x 1TB WD Black HDD Sonnet Tempo SSD Pro 2 x 120GB Intel SSD 2 x eSATA bracket installed Will this be able to run one drive on 10.6.8 and one on the current OS? How would I go about doing that? Thanks for your time and expertise!