Rollback
From Starsonata Wiki
A rollback refers to the server loading a previous saved state. Causes could be either accidental, as in a server crash, or directed, as when an admin resets the server to prevent some kind of exploiting from having happened.
The server can rollback different amounts of time, depending on the last time it saved the game. Some rollbacks lose the previous 15 minutes of gameplay, whereas some bad ones have lost as much as 8 hours of gameplay.
- See also Server Hamster, Roll-Back Anomaly