There is no easy answer to the question of whether NVR or DVR is better for security cameras. Both have their own advantages and disadvantages that need to be considered before making a decision. NVR systems are generally more expensive than DVR systems, but they offer some advantages in terms of flexibility and expandability. NVR systems can be used with a variety of different camera types, and they can be easily expanded as needed by adding additional cameras or storage devices. NVR systems also offer easier remote viewing and management capabilities than DVR systems. DVR systems are typically less expensive than NVR systems, but they may not offer as much flexibility in terms of expandability or compatibility with different camera types. DVR systems are also typically more difficult to remotely view and manage than NVR systems. However, DVR systems can offer some advantages in terms of recording quality and storage efficiency. ultimately, the decision of whether to use an NVR or DVR system for security cameras depends on the specific needs and budget of the user. Both NVR and DVR systems have their own advantages and disadvantages that need to be considered before making a decision.