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The support of file directory structures is declared by aggregating an instance of the FileDirectoryType with the BrowseName FileSystem as illustrated in Figure C.1.

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Figure C.1 – FileSystem Example

The Object representing the root of a file directory structure shall have the BrowseName FileSystem. An OPC UA Server may have different FileSystem Objects in the AddressSpace. HasComponent is used to reference a FileSystem from aggregating Objects like the Objects Folder or the Object representing a device.