4K NVR No HDD that supports: up to 32 channels H.265/H.264/MJPEG ARB (Automatic Recovery Backup) & Failover (N+1) 8 fixed internal SATA HDDs (with a maximum internal storage capacity of 48TB) e-SATA/iSCSI storage WiseStream compression technology dual monitor video out maximum camera resolution of 12MP recording/display and fisheye dewarping on web and CMS QR code.