Backup rotation/retention scheme is the how long the backup is retained on the media, many techniques have evolved over time to balance the data retention and the restoration costs. Grandfather-father-son is a very common scheme used in the backup retention strategy. In which there are three or more backup cycles such as daily, weekly and monthly. the daily backups are rotated on daily basis using FIFO mechanism, the weekly backups are rotated on a weekly basis and the monthly on a monthly or quarterly basis. Common example The hourly backup (son) are rotated on hourly with one promoted to father…
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