TechwareLabs has published a review of the AXUS FiT 500 RAID box

RAID is a very useful and inexpensive way to increase performance on your machine. RAID is also a very useful and inexpensive way to increase performance with your external data. The AXUS FiT 500 is a great product to do just that with easy RAID management and configuration, and using eSATA it's almost just as fast as an internal RAID. Check out the AXUS FiT 500, you wont regret it.

AXUS FiT 500 RAID box Review