Backup Strategy
A backup strategy defines the frequency, types (full/incremental/differential), retention, and restore testing of data backups to ensure recoverability.
Purpose
Prevent data loss and ensure fast recovery.
Mechanism
The 3-2-1 rule: 3 copies, 2 media types, 1 off-site. Full plus incremental backups balance time and space. Regular restore tests verify backups work. Encrypted backups protect sensitive data. Retention policies satisfy compliance.
Use cases
- Data protection
- Compliance
- Recovery
Related terms
Disaster Recovery
Disaster recovery is the ability to restore service after site/region failure, measured by RPO (data loss) and RTO (recovery time). GLOSSARY
Checkpoint
A checkpoint flushes in-memory dirty pages to disk and records the log position, narrowing the log range that crash recovery must replay. GLOSSARY