Abstract: Identifying the mounting locations of sub-systems in mounting units, such as rack cabinets, is disclosed. A mounting unit has a number of sub-system mounting locations. Each of one or more sub-systems is mounted in a corresponding sub-system mounting location of the cabinet. Each of one or more active indicators has an indicator mounting position on either the mounting unit or one of the sub-systems. Each of one or more sensors has a sensor mounting position similarly on either the mounting unit or one of the sub-systems, and also detects indication from a corresponding active indicator. The active indicators and the sensors cooperatively function to identify the corresponding sub-system mounting location of each sub-system in the mounting unit.

Abstract: Creating and maintaining user data using an installation file that includes features and user data components. A user data component is associated with two features (or subfeatures), an application feature and a user settings feature. The application feature is used to create user data for the user that installs the application program and the user settings feature is used to create user data for another user that initiates the application program.