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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Guides, comparisons and resources to plan, document and improve your backup strategy.
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01
Build an offline backup
Core principles, media rotation and off-site retention.
02Reduce ransomware risk
Isolation, resilience and recovery readiness.
03Understand RDX technology
Media, drives, performance and use cases.
04Compare approaches
Selection criteria, trade-offs and practical recommendations.
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Physical or logical air gap: which approach protects backup data?
Compare physical, logical and time-based air gaps, their evidence, residual risks and operational trade-offs.
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Ransomware-ready backup: 10 checks before an incident
Ten evidence-based checks for backup identities, isolation, retention, alerts, restoration and emergency access.
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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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RDX Dock and ransomware protection
Watch the Tandberg Data video with its practical context in our ransomware protection guide.