D-Link DNS-343 Diskless System 4-Bay Network Storage Enclosure $244.99 + FS @ Amazon

Product Features

Four 3.5-inch SATA hard drive bays
Diskless (Add Your Own Hard Drives)
Tool-less hard drive installation
Five hard drive configurations--Standard, JBOD, RAID 0, RAID 1, and RAID 5
High-speed Gigabit Ethernet connectivity
UPnP AV server for streaming music, photos, and video to compatible media players
Built-in FTP server for file access over the Internet
Schedule downloads from Web or FTP sites
Full or incremental backups
Real-time backups with the included software
Assign users/groups to folders with read or read/write permissions
Establish storage quotas for users and groups
Automatic e-mail notifications of device status
Configurable via a Web browser
Power management to conserve energy and help extend hard drive life
24/7 Basic Installation Support
1-Year Limited Warranty