In current version of FMS we have possibility to write folder where we like to store backups and our databases in FileMaker Admin Console.
We have to write everything 100% correct or we will be prompted with a error text telling us that the folder adress is wrong.
My suggestion is that we instead can choose a folder where we like to put our databases/backups, like when we choose to import a file. This would make things much easier and no mistakes would be possible choosing folder. FileMaker Server would also automatically write the right security properties for the chosen folder so that no problems with read and write would happen.