The support of file directory structures is declared by aggregating an instance of the FileDirectoryTypewith the BrowseName FileSystemas illustrated in Figure 1.

Figure 1– FileSystem example

The Objectrepresenting the root of a file directory structure shall have the BrowseName FileSystem. An OPC UA Servermay have different FileSystem Objectsin the AddressSpace. HasComponentis used to reference a FileSystemfrom aggregating Objectslike the Objects Folderor the Objectrepresenting a device.