This illustration depicts part one of a recovery window. There is a timeline beginning at January 1 and proceeding through January 28. Beginning on January 1, a backup is scheduled for every two weeks. Archived logs are saved every seven days, and are numbered Log 100 for January 1, Log 250 on day 7, Log 500 on day 14, Log 750 on day 21, and Log 850 on day 23. A recovery window is shown extending back seven days from day 23 to day 16. The recovery is explained in the following text.