Periodic restoration tests are carried out in order to check the quality of the backups
By simulating real-time data recovery, you can verify that the back-ups have been made properly, are not corrupted, that they can be re-inserted in the production environment and, most importantly, that staff can carry out this operation calmly.
Back-up media can become damaged, obsolete or simply corrupted. Testing data recovery on a real-life test station can confirm the proper retention of data, and the capacity of the people concerned to roll back to a previous situation.
Run the real-life tests on data erased 1 day /1 month/ 1 year ago.