System Maintenance
In the System maintenance section, you can delete data from the MyQ database, and manage advanced options.
Data Deletion section
The delete/remove buttons perform the following actions. These actions cannot be undone. It is recommended you backup your data before performing any of them.
![System Maintenance - data deletion](../../../__attachments/1039499755/DataDeletion.png?inst-v=00771c5c-ea0b-49f6-8260-87a388cf28f9)
Users to delete: Deletes all users without user sessions.
Deleted inactive users: Removes all inactive users from the MyQ database.
Inactive printers: Removes all printers without a user session from the MyQ database.
Projects to delete: Removes projects that were never used.
User data: User Sessions, Jobs, Groups, Users: Removes all user related data from the MyQ database.
Advanced section
![System Maintenance - advanced options](../../../__attachments/1039499755/AdvancedSystemMaintenance.png?inst-v=00771c5c-ea0b-49f6-8260-87a388cf28f9)
Click the Restart HTTP Server (Apache) button, to restart the HTTP server.
Click the Reconfigure MS Cluster monitoring script button to reconfigure the MS Cluster monitoring script.