A few months ago I reviewed the Icy Box NAS 4220 dual-drive enclosure from Raidsonic. They've taken the best features of the NAS box and incorporated them into the product we have for review today, the Icy Box IB 3218. Bearing a striking resemblance to the NAS 4220, the IB 3218 uses the same housing and drive mounting mechanism, but without the network interface.