Edge IP camera recording has been around for a while but in more recent days it has gained more awareness. It is all about improving the redundancy and reducing the bandwidth of the system. This occurs when the recording is done in the camera with an SD Card, HardDrive or at the camera with an attached storage device.
The concept is brilliant because you can record at incredibly high resolution and frame rates using zero bandwidth. This eliminates the concerns about the amount of bandwidth and amount of megapixels. The concern is that there are very few software applications that support edge recording and the ones that do are very expensive.
When designing a system, edge storage is definitely something to consider. Security cameras are typically set to record to a central computer, a DVR or a NVR. This is where the systems logic resides. With this type of system, as cameras are added bandwidth increases. The network is further impacted when high resolution video is recorded. As the amount of cameras are increased, the possibility of network and server overload, increases resulting in the loss of video footage. This will impact other services that are running on the network.
There are three options to prevent system overload. Number one lower the recording resolutions or the frame rate on some of the cameras. Number two employ additional recording servers to redistribute the load. While this option will increase the system redundancy and lower bandwidth utilization it is the most expensive of the three options. With the increase of licensing cost, the additional cost of recording servers and cost of a management server for central control and data synchronization the cost will be considerably higher.
The third option is to use the logic of the NVR and DVR with an edge IP camera which is recording to an SD Card, external hard disk or attached storage device. When this system is used bandwidth to the DVR or NVR is used, limiting the amount of cameras that are accessible. This is duplicating the second way only using edge cameras and adding additional cost to the system.
The more efficient way is to install decentralized security cameras (edge IP Cameras) that have the computer logic built in to the camera or attached to the camera. There are two main reasons that this is better. 1st is the video can be analyzed and processed at the computer. The recording is sent to an internal SD Card, Hard Drive, attached storage device or any storage media. This means the video does not have to be transported over the network for synchronization or to be processed at a central point. All of this hardware is eliminated.
All that is needed to access the cameras is a monitor or a viewing client. This offers the same central device configurations and video management of any number of cameras and storage devices. With a decentralized system such as this you can take a real granular approach when designing a storage component. Pick and choose which cameras will record to an SD Card, Hard Drive or attached RAID storage device.
With careful planning bandwidth can be reduced by as much as 90%. Edge IP camera recording is compelling as it insures optimum network efficiency and the bandwidth usage is minimal when the user wants to access video and play back recorded footage. No NVR or DVR are necessary with this system. Any number of users can be setup to access some or all cameras and stored video. When one camera loses connectivity the other cameras can be set up to send and alert assuring that recording interruptions can be handled immediately.