Additional Topics > Medical Imaging in IDL > Using IDL DICOM Network Services > Storage SCP Service Permissions

## Storage SCP Service Permissions

You must define a Storage SCP directory to which files are written. The Storage SCP Service requires permissions to:

- Create, read, write and delete files in the Storage SCP directory
- Create a `depot` subdirectory in the Storage SCP directory
- Create, read, write and delete files in the `depot` directory
- Create and write files in the `bin/bin.platform/dicomex` directory of the IDL installation directory where `platform` is the platform-specific `bin` directory.

When a user installs IDL with administrator or root privileges, the required permissions are set on the `dicomex` directory to allow access to all users. All users can change Storage SCP service configuration parameters. However, on Windows, only users with administrator privileges have the ability to start and stop the Storage SCP service, which is required for changes to take effect.

Note: The Storage SCP service issues a “Failed. Administrator privileges may be needed.” error if a user without administrator privileges tries to start or stop the Storage SCP service.

### About the Depot Directory

The `depot` directory is used to ensure that the full DICOM file is successfully transferred from a remote machine before it is made available in the defined Storage SCP directory. The `depot` directory is created when you first retrieve files from a remote machine.