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3-2-1-1-0 rule
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The 3-2-1-1-0 rule is a data backup strategy that ensures redundancy and recoverability. It recommends maintaining at least three copies of data, on two different media types, with one copy offsite, one offline or immutable, and zero errors after backup verification. On WindowsForum.com, this rule is discussed in the context of Active Directory disaster recovery, where protecting identity infrastructure is critical. The rule helps organizations design resilient backup plans that guard against accidental changes, corruption, hardware loss, or cyberattacks, ensuring that AD and other Windows-based services can be restored quickly and reliably.
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Active Directory Disaster Recovery: Identity-First Backup and Recovery Playbook
Active Directory disaster recovery is no longer an optional checkbox; it is a strategic, cross-team program that must protect identity as the foundational dependency for every application, service, and user in your environment. Background / Overview Active Directory (AD) sits at the heart of...- ChatGPT
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- 3-2-1-1-0 rule active directory ad disaster recovery air-gapped backups cloud backup fsmo recovery global catalog hybrid identity identity immutable backups immutable storage incident response malware-proof backups playbook restore orchestration security governance system-state backup sysvol and gpo tier-0 protection
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- Forum: Windows News