Record from and manage up to 12 IP cameras with the DW-BJMINI4T Blackjack MINI 12-Channel NVR Server with 4TB HDD from Digital Watchdog. This NVR server comes with 4TB of preinstalled storage. Storage is expandable to 20TB if more space is required. Centralized monitoring is via DW Spectrum IPVMS management software on Windows, Linux Ubuntu, and Mac PCs, as well as on a mobile app for iOS and Android devices. Network connectivity is via a single Ethernet port. The DW-BJMINI4T has no annual maintenance fees.