Since the weekly backups are flagged as GFS, they will be untouched until the 53 rd rolling week. O Daily backups automatically deleted on a rolling basis on the 32 nd day. GFS retention policies flag the weekly backup as a “weekly”, preventing deletion or modification. O Full backups run on Saturdays, with forward incremental backup jobs running daily. In addition to preserving local storage space, sending backups to a cloud provider satisfies the 3-2-1 rule for backups, getting a copy of the data offsite. Another method for archiving data is to send the data to a cloud backup provider, providing for worry-free, yet accessible from any location, data protection. Modern backup software will do all of this automatically once configured and will keep each type for the specified amount of time before either permanently archiving or deleting them. GFS can help with this by specifying how long the weekly (son), monthly (father), and yearly (grandfather) backups are kept. With disk-based backup storage, it is crucial to preserve available disk space. The idea behind these policies is to reduce storage or media usage by not storing data for too long, which can be expensive while maintaining enough data retention to meet company or legal requirements. While many versions of rotations exist, primarily to make the best use of the available media, one of the most commonly used practices is GFS, or grandfather-father-son retention. The tapes were returned to the rotation and overwritten. When tape media was the prevalent method for backup storage, a common practice was to run full backups periodically to match those point-in-time requirements and then set those tapes aside to serve as immutable weekly, monthly, and yearly backups until the retention period expired. The basic principle for retaining and archiving data is to keep data from specific points in time for longer than other versions–usually weekly, monthly, and yearly. How do backups work with a data retention policy?
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