B and H has this Iomega StorCenter Network Storage Enclosure for $534, but you can get it for $334 when you use the $200 mail-in rebate.
It features up to 12TB capacity, Intel Atom Dual-core 1.80 GHz processor, USB 3.0 and ethernet ports, and supports protocols JBOD, Apple Bonjour, FTP, DLNA, and more. Dell
has the same item for $639.99. Shipping is free.