Seagate has added the NAS 400 to its line of BlackArmor servers, which is already home to the NAS 110, 220, 420 and 440. The 400 is identical to the 420 and 440, except it ships without storage, giving you full control over what drives are installed. It supports up to 8TB of storage, Windows, Mac and Linux systems as well as RAID 0, 1, 5, 10, and JBOD configurations.
The BlackArmor NAS 4xx products have dual gigabit Ethernet, four USB 2.0 ports, four HDD bays, hardware-based encryption, remote access via any popular web browser, and various business-minded features. For instance, they ship with 10 licenses for backup software along with support for Active Directory 2003/2008 and up to 50 workstations.
Seagate is charging $400 for the NAS 400 and you should save a bit of cash by purchasing hard drives separately. The company tacks on between $200 and $300 for every 2TB HDD, which is far more than you'll pay for something like the Seagate Barracuda LP, Western Digital Caviar Green or similar "eco-class" drives.