File Based HSM Module Service. This File Based Module supports a WORM (write once, read many) like storage. Therefore the file is set to readonly. The access time of the file is set to current date + RetentionTime to indicate how long a file should be in WORM state. (This feature must be supported by the underlying filesystem/storage!) This module supports synchronization of file status by checking existence of files with specific extendions (see StatusExtensions and queryStatus).