Having not paid too much notice to the limitations of spinning drives before here is what I am about to setup in my new MP 5,1 when it arrives next week. I am of course limited to the SATA II 3GB/s unless I go for a SATAIII card? ( this is ONLY an option if I can boot from it BTW ) Boot/System Drive = Samsung 840 EVO 750 gb ( not running @ 6GB/s ) Audio recording Drive = WD Velociraptor 1TB 10,000rpm Data/ Samples Drive = WD Black 2TB 7200rpm/64mb cache General scratch Drive = Seagate 3TB 7200rpm/32mb cache Does that seem a quality and sensible setup? I have never used raid but I keep double backups and so far have not seen the need. Apart from the SSD, the other drives will be working as well as they can on the SATA II 3GB/s buss. Any advice welcome, especially if you are running an audio recording / programming system and have input on that usage. Thanks, Martin.