How to configure backup rotation and manage data lifecycle?

Backup rotation is the automated process of deleting outdated archives to free up disk space. If this process is not controlled, the storage will fill up very quickly, and new copies will stop being created. The most popular management scheme is the grandfather-father-son approach, which preserves daily, weekly, and monthly copies. This allows for a deep history of changes without the need to store every system snapshot from several years.

To implement automated rotation, built-in operating system utilities or specialized scripts in programming languages like Python or Bash are usually used. Specific retention rules are set in the backup system configuration, for example, deleting all daily copies older than a week, weekly copies older than a month, and keeping monthly copies for a year. This approach ensures a balance between historical data availability and the limits of the storage used.

An important aspect of the data lifecycle is compliance with security and regulatory requirements. Certain types of information are prohibited from being stored longer than a specific period, while other financial or legal documents must be archived for decades. Setting up retention policies helps avoid legal risks and optimizes cloud infrastructure costs by timely deleting unnecessary garbage.