Thx for your reply. Just to be on the safe side, what does indexing mean? A) Checking if a file of the RPi has changed, so that the "database" (I guess every "parameter" is stored in sth. like a database) has to be updated and the file can be synched to the other clients or B ) Checking if the database of client A is on par with client B or C) something else I doubt it could be B, because the indexing is an ongoing process although every other client is "off". And if it is A, I don't get why it is looking for "active" changes on the RPi since it doesn't matter as a result of the "read only" option. (in condition that other changes of clients are directly saved to the RPi-database) So if it is A or B I doubt that an ongoing indexing is necessary. Please, tell me if I'm wrong or where my fallacy is.