One other arrangement that is more $$$ but gives u more redundancy is to put 2 large normal sata disks in the machine with OS and content archive on them to have redundancy and then 2 SSD drives for redundancy. Once your show is programmed you can have it on both OS drives and point the catalyst software on each OS drive to a different SSD. Both would have the same content but this would offer about as much redundancy as you can get without having a second machine. If one OS or content drive bites it etc just reboot and bounce over to the other and go merrily on your way. Food for thought.... I guess I am paranoid