EvidenceSheet
NIST SP 800-53 Rev 5 · PE - Physical and Environmental Protection

PE-11(1) Emergency Power | Alternate Power Supply: Minimal Operational Capability

Provide an alternate power supply for the system that is activated Selection: manually; automatically and that can maintain minimally required operational capability in the event of an extended loss of the primary power source.

Source: NIST SP 800-53 Rev 5, PE-11(1). The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open NIST SP 800-53 Rev 5 in the compliance library.

Base controls and their enhancements. Which apply follows the baseline you are assessed against (for example FedRAMP Moderate or High, or the low, moderate and high baselines of SP 800-53B). Text in square brackets is a parameter your organisation sets.

7
artefacts
0
held by a system
2
at each review
hard
to go live
Policy repository / GRC workspace
where the evidence lives
teal = a system already holds it · olive = produced at each review. To go live: easy when half or more of the artefacts are already held by a system, moderate from a quarter to a half, hard below a quarter.

These are the artefacts auditors commonly ask for on this requirement, our guidance rather than text from the standard. Your assessor decides what is sufficient in your context, and asks for samples across the period when a report covers one.

system holds itEvidence a system already holds

none for this control

periodic reviewEvidence produced at each review

  • Alternate power supply test records · Physical access / facilities
  • Test of Mechanisms supporting and/or implementing an alternate power supply; the alternate power supply · Physical access / facilities

governing documentDocuments that govern the control

  • Physical and environmental protection policy · Policy repository / GRC workspace
  • Procedures addressing emergency power · Policy repository / GRC workspace
  • Alternate power supply · Policy repository / GRC workspace
  • Alternate power supply documentation · Policy repository / GRC workspace
  • System security plan · Policy repository / GRC workspace

First move

No system holds this evidence for you: it is people and documents. Reminders and routing to the owner still save time. Put the document under version control with an owner and review date, and log each review as a record with reviewer and date.

Common gaps auditors find

Do this for your whole sheet

Paste the rows you run your controls from and get this mapping for every control at once, with the periodic-review ones flagged and a first move per row. No account for the first run.

Build my evidence sheet

PE-11 Emergency Power · PE-11(2) Emergency Power | Alternate Power Supply: Self-contained