2. How long can it last? It depends on the camera settings on the video server here. Generally, in an important unit like a bank, the camera runs for a long time and will not stop until it breaks down.

3. The video data collected by the camera will generally be stored on the hard disk of the video server, or in a tape library or disk array.

4, like how the data is saved, how long can the video be automatically saved at most! It also depends on the settings of the video server. In general, important units require video data to be kept for at least 3 months or longer before the original old data can be overwritten. Special departments like banks generally keep them for a long time.