Scope
What CCTV and surveillance covers
The most common failure in a camera system is not a dead camera. It is discovering that the footage you need was overwritten three days ago, or that the one camera pointing at the incident was aimed at a wall.
We design surveillance around coverage and retention first. Choke points get mapped before cameras are chosen, retention is set to how long incidents actually take to surface, and the recorder is placed somewhere it cannot simply be carried off along with whatever it was watching.
Cameras are commodity hardware. The design, the cabling, the storage sizing and the verification that recording is genuinely happening are what make the difference.