Grandfather-Father-Son (GFS) is a(n):

Grandfather-Father-Son (GFS) is a(n):

• Hierarchical UML design pattern
• Common backup media rotation strategy
• Inheritance design standard in object-oriented programming
• Layered SDN (software defined networking) design standard 

 

EXPLANATION

Grandfather-Father-Son is a common backup media rotation strategy. It employs a daily-weekly-monthly approach that addresses near-term and long-term (archival) backup concerns.
https://www.sans.org/reading-room/whitepapers/sysadmin/backup-rotations-final-defense-305