The qnap vs 12164u rp pro viostor nvr network video recorder is the high end 2u chassis network surveillance server which supports high quality real time videoaudio monitoring megapixel recording up to 10 megapixel and playback of multiple ip cameras the viostor vs 12164u rp pro can simultaneously handle inputs from up to 64 megapixel cameras featuring a powerful quad core intel core i5 processor and ddr3 memory this enterprise grade nvr delivers high performance with throughput of 4