Episode 38 — Engineer Resiliency With Redundancy and Diversity Without Creating New Weaknesses
This episode teaches how to engineer resiliency using redundancy and diversity, while avoiding the classic failure where “more components” means “more ways to fail,” a tradeoff the ISSEP exam often probes through availability and mission-focused scenarios. We define redundancy as additional capacity or alternate paths that reduce single failures, and diversity as using different implementations or providers to reduce common-mode failure, then explain how each affects reliability, security, and operational complexity. You’ll learn how to design failover that is tested and observable, how to prevent privilege sprawl across redundant systems, and how to manage configuration consistency so redundancy does not create inconsistent security controls. We also cover troubleshooting issues like split-brain conditions, hidden dependencies that defeat diversity, and monitoring gaps during partial failures where the system is “up” but unsafe. A practical example ties resiliency decisions to recovery objectives, change control, and evidence so leaders can trust the design under real stress. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.
