Been looking at 3Ware and Areca SATA RAID controller cards. Looks like very decent stuff and best of all: FreeBSD support.

Combined with a Chenbro chassis makes for a nice RAID system with good cooling. The Chenbro stuff comes with enclosures to put your normal disks in, so no need for ordering expensive ‘specially prepared’ hard disks from $VENDOR. Just order your regular 200 GB Barracuda SATA disk, put them in the enclosures and place them in the chassis.