BUFFALO TeraStation III 4-Bay 2 TB (4 x 500 GB) RAID Network Attached Storage (NAS) - TS-X2.0TL/R5 Front loading hot swap hard drives with lockable front panel Active Directory Support Disk quota (soft quota) support prevents users/groups from consuming too much disk space Scheduled shut down eliminates unnecessary access and reduces energy costs DFS (Distributed File System) Support