UniStream stores certain files on your SD card, such as Data Samples and Screenshots.
Via SD Management, located on the Solution Explorer, you can limit the number of files; when the limit you define for a specific file type is exceeded, the controller will automatically delete 1/8 of the oldest files for that feature.
The option 'Is Rule Enabled' is set by default for all file types. Note that if you disable the Rule, UniLogic will delete all the files of that type, when the maximum is reached.