Chapter 19 Virtual Domains : Virtual Domains : Enabling and accessing Virtual Domains : Enabling Virtual Domains : Changes to FortiGate unit settings
  
Changes to FortiGate unit settings
Settings configured outside of a VDOM are called global settings. These settings affect the entire FortiGate unit and include areas such as interfaces, HA, maintenance, some antivirus settings, and some logging settings. In general, any unit settings that should only be changed by the top level administrator are global settings.
Settings configured within a VDOM are called VDOM settings. These settings affect only that specific VDOM and include areas such as operating mode, routing, firewall, VPN, some antivirus, some logging, and reporting.
For more information, see “Global and per-VDOM settings”.
See also 
Changes to the web-based manager and CLI
Enabling and accessing Virtual Domains