backup-strategy

To design a 3-2-1 backup strategy with GFS retention, maintain three data copies on two media types with one offsite, applying Grandfather-Father-Son policies to automate daily, weekly, and monthly backup cleanup.

The difference between incremental and differential backups is that incremental backups store only data changed since the last backup, while differential backups store all data changed since the last full backup, affecting storage space and recovery speed.

You verify backup integrity and test recovery by running automated integrity checks and performing regular recovery testing, ensuring that your backup files are uncorrupted and can be fully restored when a disaster recovery scenario occurs.

Yes, you can script a daily backup routine across local, NAS, and cloud storage by implementing the 3-2-1 principle, which defines data redundancy across local disks, network-attached storage, and offsite cloud environments with automated verification.

Rolling retention is a backup cleanup policy that automatically deletes older backups based on a fixed time window rather than generational schedules. Use rolling retention when you need continuous daily protection without complex GFS tiering.