Thank you for you answer! We have digitalization process. E.g right after a book digitalization (OCR) is complete it has about 100-1000 tiff files which we need to move to another server. Each book will have its own folder and NIFI can start moving these files only when the OCR process has finished. We can probably solve this by moving a folder with files when the OCR process is complete, to make it visible to NIFI. From the destination server there is archiving software and archivist could only start with archiving when all files have been copied (made visible to her/him thru programm) otherwise result will be incomplete if he/she start archiving too early. From your proposed solution zipping files might actually work. ... View more