The electrical network that feeds the access points, CCTV cameras, intruder detectors, etc. must need to be independent from the electrical system that feeds the computing equipment? Is it right to ask if the logs of access point are backed up and kept in a secure place? What about the videos that cameras are recording? Those have to be backed up and store? The data network by were the access points sends the information has to be independent from the data network of the computing equipment? Independent=physicaly independent. Thanks.