... recording 16 channels playback simultaneously DVR,HVR,NVR,3 in1 XM Cloud Technology DVR 1ch HD SDI CCTV DVR 8ch D1, 1080P Support ... Raid function12.Powerful network software:built-in web server,multi-DVR client &SMS Networking access for remote live viewing,recording,playback ... like perimeter detection,items care, flowmeter, abnormal video signal diagnosis17. DVR,NVR and HVR, 3 in 1.18. Support XM cloud ...