D-Link DNS-321 Network Attached Storage Enclosure The D-Link 2-Bay Network Storage Enclosure (DNS-321) is the perfect way to store, share, and safeguard your documents, music, videos, and photos. With the D-Link tool-less installation, easily insert up to two SATA drives1 without any tools or attaching any cables. Additionally, the built-in UPnP™ AV media server enables streaming of digital content to compatible network media players (such as those found in the D-Link MediaLounge™ product line