As a rule, the following principle applies to all cases of electronic data processing:

Anyone who records electronic data must also store, secure and backup this data! As a rule, the following applies to

every data backup:

• Only automated processes guarantee reliability
• The functionality of the backup tasks must be monitored
• Access to the backup data must be clearly regulated
• The functionality of data recovery must be tested periodically
• Secured databases shall also be checked for viruses
• A data backup should not be stored in the same location as the current data
• A data backup does not mean data archiving

A data backup is required at the end of each day. This results in the following scenario:

Monday to Sunday

One backup job per day (52 generations, 1 year back)

Monthly backup

Always performed on the 1st day of each month (12 generations, 1 year back)

Annual backup

Always performed on December 31st of the respective year (10 generations, 10 years back)