The Data Integration Service accesses file directories when it reads source files, reads control files, writes output files, and writes log files.
When the Data Integration Service runs on multiple nodes, you might need to configure some of the directory properties to use a single shared directory to ensure that the processes running on each node can access all files.
When the Data Integration Service uses operating system profiles, the operating system user specified in the profile must have access to the directories that the Data Integration Service accesses at run time.