Groups are one of the most used areas of functionality in Operations Manager. When you are creating overrides, setting up role based security, scoping views, or running reports you are most likely using groups.  Generically speaking, groups allow you to express the fact that an arbitrary number of instances are related in some way. One of the most common scenarios is grouping of servers to express the fact that some servers are for example production servers and some servers are test/dev servers.  You can then use the "Production Servers" group when creating a user role to grant monitoring access to these servers in Operations Manager.

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