What it means
Server power resilience combines redundant supplies, independent circuits, UPS capacity, generators, distribution, monitoring, maintenance, and graceful shutdown to manage electrical failure.
Why it matters
Two power supplies do not create resilience when both depend on the same circuit, PDU, or untested backup source; the entire power path must be evaluated.
Practical focus
- Define the complete utility-to-device power path for each critical workload and the security outcome it must support
- Apply independent feeds, tested UPS runtime, generator procedures, monitored distribution, and shutdown sequencing through documented, reviewable configuration
- Verify load, battery health, transfer tests, circuit separation, and maintenance state after changes and on a scheduled basis
- Plan for a common upstream dependency defeating apparent device-level redundancy, including rollback, ownership, and escalation
Common mistakes
- Enabling a feature without defining what it should protect
- Relying on defaults or one-time validation
- Granting broad exceptions that erase the control boundary
- Treating a common upstream dependency defeating apparent device-level redundancy as an operational surprise instead of a test case
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: