PE-11(1)—Emergency Power | Alternate Power Supply -- Minimal Operational Capability
IL4 High
IL5
IL6
>Control Description
Provide an alternate power supply for the system that is activated ☑manually; automatically and that can maintain minimally required operational capability in the event of an extended loss of the primary power source.
>DoD Impact Level Requirements
FedRAMP Parameter Values
PE-11 (1) [automatically]
>Discussion
Provision of an alternate power supply with minimal operating capability can be satisfied by accessing a secondary commercial power supply or other external power supply.
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What policies and procedures govern the implementation of alternate power supply -- minimal operational capability for the organization's facilities?
- •Who is responsible for overseeing and maintaining alternate power supply -- minimal operational capability controls?
- •How frequently are alternate power supply -- minimal operational capability controls reviewed and updated?
- •What process exists for granting exceptions to alternate power supply -- minimal operational capability requirements?
- •How does the organization ensure accountability for alternate power supply -- minimal operational capability across all facility locations?
Technical Implementation:
- •What technologies or systems technically implement alternate power supply -- minimal operational capability?
- •How are these systems configured to meet the control requirements?
- •What monitoring or alerting capabilities exist for alternate power supply -- minimal operational capability?
- •How do alternate power supply -- minimal operational capability systems integrate with other physical security infrastructure?
- •What redundancy or backup mechanisms support alternate power supply -- minimal operational capability?
Evidence & Documentation:
- •Provide documented policies and procedures for alternate power supply -- minimal operational capability.
- •Provide evidence of alternate power supply -- minimal operational capability implementation and configuration.
- •Provide logs, records, or reports demonstrating alternate power supply -- minimal operational capability activities over the past 90 days.
- •Provide testing, maintenance, or inspection records for alternate power supply -- minimal operational capability from the past year.
- •Provide evidence of alternate power supply -- minimal operational capability reviews, audits, or assessments.
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