In recent years, security has become a priority for many, both for monitoring the perimeter of homes, entrances or gardens and for the protection of companies and businesses.
The prerogatives for efficient video surveillance are the installation of adequate cameras and a good recorder . For the latter there are various models and acronyms to choose from, so the risk is that of purchasing a product that is not suited to your needs and with a cost higher than the budgeted budget.
Among the various types of video surveillance recorders, it is possible to identify two macro categories :
* DVR video recorders
* NVR video recorders
Here is the guide in which we explain the main differences between video surveillance systems with DVR and video surveillance systems with NVR.
DVR stands for Digital Video Recorder and data recording takes place directly on the hard disk, after digital conversion. The Hard Disk can be internal or external.
NVR stands for Network Video Recorder and records videos already encoded by IP cameras directly via the network. A prerequisite for choosing the NVR is the combination with IP cameras equipped with Ethernet output for network connection.
The biggest difference between the two devices is therefore given by the way in which the images are stored , the Digital Video Recorder digitally compresses the videos and stores them in a hard disk, the NVR on the contrary works directly on the network and the streams Recorded videos are already encoded at the camera level.
There are also differences between the two devices in terms of limitations, now let's see their main advantages and disadvantages in detail.
We have seen what the main difference is between DVR and NVR, however it may still not be entirely clear which one to choose between the two. We have therefore decided to briefly summarize the advantages and disadvantages of both, so as to give you the opportunity to make an informed choice based on your budget and performance needs.
The advantages of the DVR video recorder are:
* DVR systems are compatible with older analog CCTV systems : HD DVR systems adopting AHD, HDCVI, HDTVI technologies can be used to upgrade existing standard definition CCTV systems
* DVR systems are more reliable as they are wired systems , so there is no danger of network outages or interference hampering IP network or wireless systems
* DVRs have a lower average cost than video surveillance systems with NVR
The disadvantages of the DVR video recorder are:
* All cameras need to connect to the DVR and in case the DVR fails or does not work properly, the whole system will not work
* The cameras to which it can be connected can only be analogue and therefore not accessible on the network
* The DVR can be compromised by cutting or accessing the physical connections of the system, and the signal is not encrypted to keep it safe from unauthorized viewing
* Installation can be expensive and time-consuming , as each camera must follow the coaxial cable to the DVR
The advantages of the NVR video recorder are:
* The NVR is connected by Ethernet cable , it is easy to install and no wiring is required
* Analogue to digital processing occurs at the camera level, meaning a safer and more robust system
* Can connect to the Internet for remote viewing capabilities and multiple storage locations
* Data on the system can be encrypted for better protection
* Can record at higher IPS (images per second) levels
* Allows cameras with advanced features such as motion detection and higher resolutions
The disadvantages of the NVR video recorder are:
* Data transmission relies on the network , so it may fail to record or suffer interference if the network stops or is affected by weather, obstructions or other devices
* Exposed to online hacking on LAN
* Transmitting data over a network consumes a large amount of data and may affect network costs for data usage
* Higher average cost compared to typical DVR systems
After this small summary of the differences between DVR video recorders and NVR video recorders it is clear that the choice will depend on the type of system you need and the budget available . If, for example, we know that we will have to use our video recorder in an area where there is no efficient connection, we will be better off moving towards a DVR type system.
The costs of video surveillance recorders are so varied that the best solution is to contact a professional and reveal your needs, also specifying the budget available and asking for a quote. If you have any doubts, you can ask our experts for advice directly, who will be able to guide you in the most appropriate choice for you.
The cost of DVR and NVR video surveillance recorders varies from a few hundred euros for the more commercial models, to over 500 euros for the more professional models.
With an average cost of around 300 euros it will therefore be possible to purchase a good video surveillance recorder.
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