In the context of a raid such as this ... you'd want, at least, visible hard wired camera's (not WiFi - jamming) going to a NAS box (for storage) with a distinct colour network cable from that NAS apparently direct to the main router ..

The cunning part is to have additional hidden cameras hard wired within the studs going to a second well hidden NAS box that takes the direct mirror feed from the first NAS box via a hidden diversion of the seemingly direct cable.

The intent is to have sacrifical cameras and sacrifical storage .. along with additional cameras and mirrored sacrifical camera + additional storage .. and then optional encrypted offsite backup.

Cables Vs WiFi is interesting - cables can be traced, but they are harder to remotely tap or jam.