Design backups that actually work when they are needed. Covers RPO and RTO definition, the 3-2-1 rule, encryption before leaving the host, ransomware-resistant immutable storage, restore drills, and the split between operational and legal retention. Invoke when 'we have backups but nobody has restored them' is true, after a near-miss, or before a major migration.
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Backups & Disaster Recovery
The line that defines a backup strategy: "a backup you have not restored is a wish, not a backup." Most teams have something called "backups" that have never been restored end-to-end. Sometimes they don't actually work; sometimes they work but are too slow; sometimes they work but the team forgot a critical piece of state and ends up with a half-restored system.
This skill builds a strategy that survives the first real incident — not the strategy that looks go
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