Back up your database before you upgrade. Trellix strongly recommends the following:
All tables backup
Config tables backup
Archiving alerts and packet logs
All tables backup is time-consuming (based upon the size of your database); however, it guarantees the integrity of your existing data. All tables backup includes the entire database, that is, all configurations, user activity, alert information, and custom attacks. However, Trellix recommends a separate all tables and config tables backup. This provides you options if, for some reason, you want to roll back to your earlier version of the Central Manager or Manager.
Notes:
Preferably, stop the Central Manager or Manager service before you begin any backup process.
For step-by-step information on all tables and config tables backup as well as archiving alerts and packet logs, see the Trellix Intrusion Prevention System Product Guide.