Servers and Storage for Recordings and Site Data
How a site chooses servers and storage for video, access logs, and applications, and what RAID and a backup copy each protect you from.
Networks: The Cabling Under Every Other System
How copper, fiber, switches, and racks carry cameras, readers, and the office, and why a labeled test result matters more than a tidy photo.
Public Address and Voice Evacuation
How one audio system plays music, pages staff, and speaks evacuation messages, and what EN 54 changes about the amplifiers and the zones.