Use this option is to delete IIS-related data from the database. Select the servers for which data must be deleted and the date range.
             
        
| Option | Description | 
|---|---|
|   | Click this button to view all IIS log files whose events have been imported so far. For more information about this option, see IIS log file import history. | 
| Purge from | Enter the start date of the date range to purge. | 
| Purge to | Enter the end date of the date range to purge. | 
| Compact database | Select this check box to compact or shrink the database at the end of the import process. |