3-2-1-1-0 backup rule: Strengthening data protection against ransomware

The 3-2-1-1-0 backup rule is an advanced data protection strategy designed to combat modern threats like ransomware by evolving the traditional 3-2-1 model. It mandates maintaining three copies of data on two different media, including one offsite, one immutable or air-gapped, and zero errors through continuous verification. This multi-layered approach ensures that backups remain tamper-proof, verified, and fully recoverable to maintain business continuity.