Downtime
What is Downtime?
A period when a system, service, or network is unavailable or not functioning, potentially impacting business operations.
Terms that appear alongside downtime
Each of these is named in at least one of the same controls as downtime. The number is how many controls name both.
- nist 4 shared controls
- disruption 3 shared controls
- disaster recovery 3 shared controls
- iso 22301 3 shared controls
- crisis management 3 shared controls
- business impact analysis 3 shared controls
- redundancy 3 shared controls
- business continuity 3 shared controls
Frameworks that govern downtime
What the standards actually require on downtime
Requirements naming downtime across 6 standards, quoted from the control text.
The threshold is met where the incident lasts longer than 24 hours, or service downtime exceeds two hours for ICT services supporting critical or important functions.
dora-rts-on-classification-of-ict-related-incidents-commission-delegated-regulation-eu-2024-1772::9.3 · Article 9(3): Threshold for duration and service downtime →Planned arrangements shall let the laboratory keep working if information systems that its activities depend on fail or are unavailable, covering among other things the automatic selection of results and their reporting.
iso-15189-2022-medical-laboratories-requirements-for-quality-and-competence::7.6.4 · 7.6.4 Downtime plans →The FI must make all reasonable effort to maintain high availability for critical systems and must ensure the total unscheduled downtime of each critical system affecting operations or customer service does not exceed 4 hours in any rolling 12-month period.
monetary-authority-of-singapore-technology-risk-management-guidelines::TRMN.5 · Notice on TRM paragraph 5: high availability, at most 4 hours unscheduled downtime in 12 months →The bank aligns its SOC, incident response and digital forensics to reduce business downtime and restore normal operations.
rbi-cybersecurity-framework-for-banks::191 · Para 191: SOC, incident response and forensics aligned to cut downtime →The organisation plans how it will keep the business running and avoid downtime if events force it off its migration plan, such as a sudden advance in the computing capability that threatens current public-key methods or a practical attack on an established cr...
netherlands-pqc-migration-handbook-aivd-cwi-tno-2nd-edition-2024::BACKUP · Prepare a fallback plan for unexpected developments →IT operations management implements policies, standards and procedures for creating and changing job schedules and for analysing and maximising resources, uses automated scheduling tools to run batch and online tasks, limit downtime and make adequate use of se...
ffiec-it-examination-handbook::AIO-VI.B.5 · VI.B.5 Scheduling (Architecture, Infrastructure, and Operations) →Questions people ask about downtime
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