Dumping a database with the init option overwrites any existing files on the tape or disk.
If you perform two or more dumps to a tape device and use the same file name for both dumps (specified with the FILENAME parameter), the SAP ASE server appends the second dump to the archive device. You cannot restore the second dump, because the SAP ASE server locates the first instance of the dump image with the specified file name and restores this image instead. The SAP ASE server does not search for subsequent dump images with the same file name.
Backup Server sends the dump file name to the location specified by the with notify clause. Before storing a backup tape, the operator should label it with the database name, file name, date, and other pertinent information. When loading a tape without an identifying label, use the with headeronly and with listonly options to determine the contents.