In the Grandfather/Father/Son backup scheme, which statement best describes the rotation and frequency?

In the Grandfather/Father/Son backup scheme, which statement best describes the rotation and frequency?

• A. Grandfather is done monthly, Father is done weekly, Son is done daily, with rotation where the old backups shift levels
• B. Grandfather is done daily, Father weekly, Son monthly
• C. Only a single backup is kept with no rotation
• D. All backups are stored on-site with no offsite copy

Answer: (A)

Layered backups by how often you keep them and for how long is the idea here. In this scheme, the most recent daily backups are kept as the daily set (the newest copies you can restore from quickly). Weekly backups hold a longer-term view, and monthly backups are kept the longest for archival recovery. The rotation moves older copies up a level: when a new daily backup is created, the current daily becomes the weekly, the current weekly becomes the monthly, and older monthly copies are dropped as needed to fit retention. This setup gives you fast recovery from the most recent data, while still preserving older versions for longer-term restoration and protection against failures. Other options either swap the frequencies (daily, weekly, monthly in the wrong order), remove rotation entirely, or rely only on on-site storage with no offsite copy, which would reduce resilience and long-term recoverability.

Layered backups by how often you keep them and for how long is the idea here. In this scheme, the most recent daily backups are kept as the daily set (the newest copies you can restore from quickly). Weekly backups hold a longer-term view, and monthly backups are kept the longest for archival recovery. The rotation moves older copies up a level: when a new daily backup is created, the current daily becomes the weekly, the current weekly becomes the monthly, and older monthly copies are dropped as needed to fit retention. This setup gives you fast recovery from the most recent data, while still preserving older versions for longer-term restoration and protection against failures.

Other options either swap the frequencies (daily, weekly, monthly in the wrong order), remove rotation entirely, or rely only on on-site storage with no offsite copy, which would reduce resilience and long-term recoverability.