Backup Policy

A file copy is only useful when it can be found and restored after a problem. A backup policy sets the required scope and method and says who is responsible for checking results.

A fictional shop backs up its sales database daily, and its policy names the database, retention period and person who checks each run so that it does not rely on memory. Start with critical data, systems and dependencies, because a database backup without application settings or encryption keys might not restore the service.

A fictional payroll system has records in one place and configuration in another, so the team includes both in its recovery plan and tests the combined restore. Frequency follows the acceptable data-loss window: if the business can lose no more than one hour of transactions a nightly copy may be insufficient, and a fictional online store that promises hourly recovery calls for frequent backups, verifies the schedule and raises an alert when a run is missed.

Retention answers how long old copies remain. Short retention may not cover a late-discovered error, while long retention increases cost and privacy exposure, so choose based on need and legal rules; a fictional accountant who discovers last month's file corruption cannot be helped by a policy retaining only two days of copies, and the company revises its retention after assessing the risk.

Copies should also be protected against accidental deletion and attack, since CISA advises offline encrypted backups and regular tests for ransomware resilience, and cloud backups need access and deletion controls. Protection and keys need care.

A fictional team stores backups in the same account as production with shared admin credentials, so one compromised login could affect both, and it separates privileges and protects the copies. Encryption matters in transit and at rest, but keys must be available for recovery, because losing a key can make an intact backup useless, so control access and document secure key recovery.

Ownership and testing make the policy real. The policy should define who configures backups, monitors failures, approves restores and maintains the document, and outsourcing does not remove oversight; a fictional firm uses a managed service where the provider runs backups while the firm reviews reports and tests recovery.

A backup success notification does not prove restored data works, so periodic tests should restore representative systems and check integrity, as when a fictional hospital unit restores into an isolated environment, confirms that records open and workflows function, and logs the elapsed time. Targets, storage and review complete the picture.

Recovery time objectives address how quickly operations need to return, which differs from how much data may be lost, so a fictional warehouse that can tolerate a four-hour interruption but only fifteen minutes of missing orders chooses different technical controls for each target. Version history is not automatically an independent backup, so a fictional employee who deletes a shared folder can restore it from version history while the team still keeps protected copies for larger incidents, and the policy should say where copies are stored, who can retrieve them in a crisis and be reviewed after changes in systems, suppliers and laws, because a document that is never updated is not an effective control.