The qnap vs 12148u 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 and playback of multiple ip cameras the viostor vs 12148u rp pro can simultaneously handle inputs from up to 48 megapixel cameras featuring a powerful quad core intel core i5 processor and ddr3 memory this enterprise grade nvr delivers high performance with throughput of 450 mbps for recording