System-wide preferences are stored in the database, typically by means of editing configuration files and loading them in the database, or by editing database directly in EdAdmin4 / Administrative Browser.
System-wide preference covers connection parameters, database parameters, global variables, print presets and user interface.
Some of system-wide preferences are to be set in the installing phase, while others are to be set in the configuring phase.
Installing phase
Place APPSETTINGS.XML, Define server and database, Define root for volumes
Configuring phase
Configuring GN4 user interface