Data Backup Strategies

Summary

Systematically protecting data against accidental deletion, corruption, or disaster — following the 3-2-1 rule (3 copies, 2 different media types, 1 offsite) as a general starting principle.

• 1Design a backup strategy for a hypothetical application's data following the 3-2-1 rule.
• 2Learn the difference between full, incremental, and differential backups.
• 3Practice restoring from a backup, not just creating one — an untested backup isn't a real backup.