From OpenSCADAWiki
Configuration of the messages archive is represented by the fields:
- Buffer size, archiving period — indicates the size of the memory area reserved for the interim buffer of messages. Messages from the buffer are requested for viewing and archived with the messages archivers by the specified periodicity in seconds.
- Days of the alarms automatic clearing — after that term the alarms are meant as forgotten and inactual, so removed from the table of the active alarms. Zero disables the automatic clearing.