In order to ensure that the data in the archive is in a good condition, it is necessary to constantly monitor the condition of the data.
	The Data Consistency Checking (DCC) Thread takes care of this task. It is executed periodically (defined by a configuration parameter) and carries out the check of the data.
	It is checked for each file if it is accessible, if the size is as expected and or if the checksum is given if the checksum is correct. It is also checked if files are found on the disk, which are not supposed to be there.
	If discrepancies are found, an Email Notification Message is send to the subscribers of this specified in the configuration file.
	It is possible to specify how much load the DCC Thread should consume (Priority) and to specify the maximum number of checking sub-threads that can run simultaneously. In principle one such sub-thread per disk is created.