It's a limitation of that odroid enclosure. You could do raid over iscsi (but I wouldn't). Buffalo do a 2 drive enclosure very cheap, but I'd go for a synology

It's a limitation of that odroid enclosure. You could do raid over iscsi (but I wouldn't). Buffalo do a 2 drive enclosure very cheap, but I'd go for a synology or qnap enclosure for a bit more money.