Now it also happend to me. My server crashed and my savegame was rendered useless. All my chuncks messed up. It was just a little homeserver running vailla, but i got an idea. Why there's no plugin which will use two savegames indead of one and rotates beween these. In case of a power failure or some or some other stuff there would be always one correct savegame. I mean. This is a normal mechanism to prevent inconsistent data. Even the Pokemon games makes use of this. Is there a plugin which will exactly do this or maybe someone would like to create one? As of now I will never run an vanilla server.