Ubiquiti's UNVR-4 is an enterprise network video recorder, can provide up to 30 days of 4K video storage for 15 cameras or Full HD video storage for 50 cameras.
Montavue 8 Channel 4K NVR with 8 PoE Ports, MontavueGO Remote Connectivity, ONVIF Compliant, and 20TB HDD Capacity.
Montavue 32 Channel 4K NVR with 16 PoE Ports, MontavueGO Remote Connectivity, ONVIF Compliant, and 40TB HDD capacity.