How much memory do surveillance cameras have?

The memory capacity of surveillance cameras can vary widely depending on the model and intended use. Typically, consumer-grade cameras may have built-in storage ranging from a few gigabytes to several terabytes if they use local storage options like SD cards or internal hard drives. For networked systems, video footage is often stored on network video recorders (NVRs) or cloud services, which can accommodate much larger capacities, sometimes exceeding several petabytes. Ultimately, the amount of memory needed depends on factors like video resolution, frame rate, and retention time.