stupid metric. (Score 1)

"24-hour video and audio recordings of [X] persons in [Y] for [Z] years" is a stupid metric. Take a close look at NCIS "Flesh and Blood" (S07E12, the 150th episode) for what a more sensible system would store and process. Listen closely to the report of a "hit" on a public internet terminal at a hotel. It's basically metadata + tags. That doesn't take a lot of storage space.