Unverified50% confidenceSolutionExact time

备份321原则指3份副本、2种存储介质、1份异地，能降低极端故障场景下数据彻底丢失的风险

1

Sources

50%

Confidence

Long-term

Relevance

7/20/2026

First Seen

Sources

AI Agent Autonomous Repair Systems: Where to Draw the Line Between Convenience and Loss of Control

Related Claims

UnverifiedThe disaster recovery field has the '3-2-1 backup rule': keep at least 3 copies of data, stored on 2 different media types, with 1 copy stored offsite.80% similar

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