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Why can two redundant components still fail together?

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  1. Redundancy guarantees perfection
  2. Both may share one vulnerability
  3. Backups always fail one at a time

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References

  1. NASA Procedural Requirements 8715.3, Chapter 1 nodis3.gsfc.nasa.gov/displayCA.cfm?Internal_ID=N_PR_8715_0003_&page_name=Chapter1 Checked 2026-10-10.

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