Scheduled Maintenance
126070·updated Aug 30, 2026No definition recorded.
Composition
Source
, scheduled maintenance) and mission and business requirements (e.g., time zone differences,the sentence this term was read in
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A planned, pre-announced activity window during which an information system, component, or service undergoes upkeep tasks—such as patching, hardware servicing, configuration changes, or software updates—that are coordinated in advance and recorded. It is distinguished from unscheduled (emergency or reactive) maintenance by its predictable timing, which allows organizations to balance technical requirements (e.g., system upgrades) against operational constraints such as time-zone differences or mission-critical availability windows. In NIST SP 800-53 and its derivatives, scheduled maintenance is treated as a legitimate system-related requirement that organizations must weigh alongside mission and business requirements when managing access, account lifecycles, and availability. Within the NIST Maintenance (MA) control family, it is one component of the secure upkeep regime for system components—alongside emergency repairs and secure remote maintenance controls—governed by requirements for controlled execution, logging, and authorization.
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