The Tivoli Enterprise Monitoring Server and every IBM Tivoli Monitoring product has at least one predefined managed system group, indicated by an asterisk at the beginning of the list name, such as *NT_SYSTEM for IBM Tivoli Monitoring for Windows.
You can also create new managed system groups for different purposes. For example, you can create a group of Linux managed systems for a particular geographic region named LINUX_LONDON, so that you can distribute situations that are specific to that location. Managed system groups are stored at the Hub Tivoli Enterprise Monitoring Server, thus any lists you create are available to all users who are logged on to the Tivoli® Enterprise Portal Server that connects to that hub monitoring server.
When you assign a predefined managed system group to a situation, policy, query, custom Navigator, historical collection, historical configuration object group, or a situation object group, all managed systems of that type are selected. And as new managed systems are added to the monitored network, they automatically become members of the predefined managed system group of their agent type.
You cannot edit or delete a predefined managed system group.