QNAP VS-5020 VioStor NVR (Network Video Recorder) is a high performance network video surveillance system for high-end, convenient, and reliable IP-based real-time monitoring and video recording. Powered by Intel 1.6GHz CPU and 1GB DDRII memory, the Linux-embedded NVR supports 20-channel H.264, MxPEG, MPEG-4 and M-JPEG recording from IP-based security cameras. With five high-speed hot-swappable SATA hard drives, the VS-5020 VioStor NVR supports long-term and high performance megapixel recording (up to 8 megapixels) from various IP cameras anytime, anywhere over the web and independent of any PC. With advanced RAID protection by RAID 0/ 1/ 5/ 5+ Hot spare/ 6/ 6+ Hot spare/ JBOD, the NVR enables secure data protection.