Gigabit Ethernet and USB ports. Price: $300 (1TB, street); $180 (500GB, street)
It's not common to take a NAS device on location, but if you do need one, best make it small like the Buffalo TechnologyLinkStation Mini, which measures 1.6"x3.2" x5.3" (WxHxD). That's still enough to pack in two notebook-sized (2.5in.) hard drives, which can be set up as either RAID 0 or RAID 1. You can choose between 500GB and 1TB capacities. This low-power unit doesn't use fans, so you can use it in a busy production environment without adding to the noise. The LinkStation Mini supports Microsoft Active Directory, which stores information about users, helps assign security policies, and deploys software.