I've been looking for internal RAID solutions for a 2009 Mac Pro. Essentially what I'd like to do is set up the four internal HDD's as a RAID 50 array and use an SSD as a boot/scratch disk, either in one of the PCIe slots, or optical bay, or both. So I'm not really concerned with finding an OSX bootable controller. I've just been confused by a lot of the information that I've found about RAID cards for the 09+ Pros. It seems like I can't use a mini SAS controller because the 09+ Pro's no longer have the internal SAS connection? If so, what are my options for RAID cards under $400 that would support RAID 50? I've considered getting an Apple RAID card on ebay, but it doesn't support 50.