All loging is configurable based on the log4net standard (http://logging.apache.org/log4net/). XML configuration files are available for e.g. collector, notifier en indexer (for version 4.1). this configuration allows all kind of settings for logging including the location of the log files, but also what kind log information is logged based on a level to control the size of the log files (for example a WARN, DEBUG or INFO level can be set to determine what kind of information is written to the log file).  

Please refer also to section 10.3 of the Administrator Guide.