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
Daily data recording
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)
Weekly data recording
A data backup is required after each recording of data. In this example, the data recording is performed every Friday. This results in the following scenario:
Friday evening
One backup every Friday (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 the 1st day of each year (10 generations, 10 years back)