You can run a data collection job at the server group level.
From the navigation pane, go to Activate.
The Activate page appears.
Under File Storage optimization, click File storage optimization.
The File storage optimization page appears.
On the Server group tab, in the server group row, click the action button , and then click Start data collection.
On the data source properties page, a new row appears in the Active jobs table with the progress of the active job.