System collections provide a way to group systems in the HP SIM database. A collection can be used to filter systems that share common attributes, such as operating system type or hardware type. System collections can also be arbitrary collections of systems. Systems can belong to one or more system collections. Many default shared system collections are provided, and you can create your own shared and private collections. Working with system collections increases your efficiency because you can perform a task on each system in a system collection with a single step.