Note that in contrast to RavenDB commands, RavenFS client exposes only the async methods.
Working with multiple file systems
By default file commands are executed against the DefaultFileSystem configured in the FilesStore. However, you can perform the command actions on another existing file system. Note that this file system may require different credentials. Take a look at the example:
IAsyncFilesCommands southwindCommands = store
.With(new NetworkCredential("user", "pass"));