In a traditional tape-based backup rotation strategy, three tiers of media are designated for daily, weekly, and monthly backups. What is the name of this rotation scheme?
3-2-1 backup rule
Grandfather-Father-Son (GFS)
Tower of Hanoi
Round-robin
The strategy is called the Grandfather-Father-Son (GFS) rotation. "Son" media are used for daily backups and are overwritten frequently, "Father" media retain weekly full backups, and "Grandfather" media hold monthly backups that are often taken off-site. Using these three tiers creates multiple restore points while keeping the amount of media manageable. Other rotation schemes such as Tower of Hanoi, Round-robin, or relying solely on the 3-2-1 rule organize media differently and do not specifically define daily, weekly, and monthly tiers.
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