The zmaudit daemon exists to check that the saved information in the database and on the filesystem match and are consistent with each other. If an error occurs or if you are using 'fast deletes' it may be that database records are deleted but files remain. In this case, and similar, zmaudit will remove redundant information to synchronise the two data stores. This option controls whether zmaudit is run in the background and performs these checks and fixes continuously. This is recommended for most systems however if you have a very large number of events the process of scanning the database and filesystem may take a long time and impact performance. In this case you may prefer to not have zmaudit running unconditionally and schedule occasional checks at other, more convenient, times.