64 Channel Onvif 4K IP System Surveillance NVR Full Size 2U with up to 8MP Ultra HD Recording Includes Free US Technical Support, Free Apps and Warranty!

This is a review for the 64 Channel Sibell Full-Size 4K NVR:I am a bit surprised to not see any reviews about the Sibell line that SecurityCameraKing sells.I have looked around and educated myself for a good two weeks before I bought my first unit from them and have to say that price versus features and performance doesn't seem to have a competitor anywhere around. Even their Elite line is fairly higher in pricing.What I learned is that you have to pay attention to the total Bitrate the NVR can handle.The formula is simple:If you are aiming to have at least 1080p @ 30 fps (2MP), which is considered full HD, on each channel, you have to calculate about 5Mbps of data coming from the camera per channel. Keep in mind that Bitrate is depending on multiple parameters.Frame rate per second fps (30 is good old TV standard) and video encoding are some of the most important.If your camera and recorder uses H.265 encoding it allows you to store twice as much footage as with H.264. So it is another spec you want to look out for.So, multiply 5Mbps by the number of channels your NVR has and that gives you the total Bitrate that you need in order to have at least 1080p @30fps on each available channel.So for the 64 channel unit, I need at least 320Mbps Bitrate for full HD @ 30 fps per channel which this unit has.I think it boils down to that you need to buy more channels than you actually need, so you can run some lower resolution cameras in some areas and higher or really high resolution like 4K (8MP) video in areas you really need it.Hence, you cannot have too many channels combined with a high enough Bitrate that your processor can handle.Also, I decided that I don't want PoE ports build in, since it forces you to run all camera Cat cables back to your recorder (very inconvenient for a two story or multi story house) but instead, units with one or two LAN inputs that simply need a PoE switch where the camera is located.Another really good feature on this unit here is that is has 2 LAN ports, one for connecting the unit to your LAN and the second one you can create your own private network for all your cameras that never sees any connection to the internet, hence it is untouchable to hackers and also doesn't tax your network with data traffic from your cameras.Remote viewing on this unit is accomplished with the NAT service, but I haven't figured out if it actually lets you view even when outside of your own home network.But I found a much safer way of remote viewing anyway. Instead of port forwarding, I simply use team viewer or another remote connect software to connect via a VPN connection to my PC and it lets me view my entire system from anywhere with no risk of opening up your network to the outside world.So, for right now I am going to keep on going with Sibell unless I find anything that would steer me away from this line.And in terms of SecurityCameraKing, I have had to call them only twice now, but that was also mostly because I am brand new to IP camera systems and they returned both calls evern after a while, which showed me that they do take their calls they get seriously.The specialist on the other line was very patient and knowledgeable and helped me with my minor issues that I still had due to the learning curve.I am a happy customer and recommend SecurityCameraKing.

Bought it for one of our locations. The Dual Network cards were handy in keeping camera traffic separate which was extremely helpful when networking.