The 3-2-1-1-0 rule: build a backup strategy you can truly restore
Apply the 3-2-1-1-0 rule with independent copies, off-site custody, isolation and verified recovery evidence.
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Offline backup
Test a restore: checklist, cadence and proof of success
A complete restore-testing method covering scope, RPO/RTO, prerequisites, timing, integrity, evidence and cadence.
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Offline backup: organise media rotation in 5 steps
A practical five-step method for labelling, rotating, storing and testing removable offline backup media.
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