This message indicates that satd (“The System Audit Daemon”) has run out of disk space to save the system audit trail and must now shutdown the system.
 | Warning: You will need to free up more disk space to ensure the proper operation of the system. |
See man satd for more information. The system will shut itself down because it is about to run out of room to save more audit information.
For information on how to configure or disable System Alerts, click here.