The Samsung SRN-1000-22TB High Performance Network Video Recorder allows you to continuously build upon and develop your new or existing security system into a scalable solution. This NVR is capable of recording 100 Mb/s of video bandwidth and managing up to 64 cameras. It supports a wide range of resolutions from VGA to 5 Megapixel in H.264, MPEG4, and MJPEG formats. It provides maximum flexibility in storage with a built-in 1TB HDD, maximum 8 internal HDDs, and support for 2 external storage expansion units (SVS-5E). This allows for maximum attached storage of 22TB for this model.