Which backup strategy involves creating copies of data

Solution

Snapshot backup is a backup strategy that creates a point-in-time image of data, allowing users to restore their systems to a specific moment. This method is particularly useful for ensuring data integrity and recovery, as it captures the exact state of data at the time the snapshot is taken. Snapshots can include both full and incremental backups, providing flexibility and efficiency in data management. By combining the benefits of full backups (complete data copy) and incremental backups (copying only the changes made since the last backup), snapshot backups enable quick recovery options while minimizing storage requirements. This is essential in environments that demand high availability and quick disaster recovery solutions. Snapshots are often used in conjunction with virtual machines and databases, where frequent backups are necessary to protect against data loss while maintaining performance and system responsiveness. Option A (Differential Backup) - A differential backup captures all changes made since the last full backup, which does not inherently provide point-in-time recovery like snapshots. Option B (Full Backup) - A full backup creates a complete copy of all data, but it does not allow for point-in-time recovery without additional incremental backups. Option C (Incremental Backup) - Incremental backups only save changes since the last backup, making it less comprehensive than snapshot backups for point-in-time recovery. Option D (Continuous Data Protection) - This strategy continuously saves data changes but does not create traditional point-in-time snapshots, focusing instead on real-time protection.