Backup retention refers to how long backup copies are kept before being deleted or overwritten. It's crucial for:

• Compliance Requirements: Many industries require data retention for specific periods (7 years for financial records)
• Point-in-Time Recovery: Ability to restore data from different time periods
• Storage Cost Management: Longer retention = higher storage costs
• Legal Protection: Historical data may be needed for litigation
  Common Retention Strategies:
• Daily backups kept for 30 days
• Weekly backups kept for 12 weeks
• Monthly backups kept for 12 months
• Yearly backups kept for 7 years