Unplanned Downtime

Unplanned downtime occurs when systems fail unexpectedly, disrupting business operations.

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What Is Unplanned Downtime

Unplanned downtime is an unexpected period when a system, service, or infrastructure becomes unavailable, disrupting normal operations. It occurs without warning due to hardware failures, software bugs, network issues, power outages, or human error, causing immediate impact to business operations.

Example Of Unplanned Downtime

A database server crashes during peak business hours due to a hardware failure. The incident management team receives alerts, diagnoses the issue, and works to restore service while communicating updates to stakeholders. The entire process takes three hours, affecting customer transactions.

Types Of Unplanned Downtime

  • Infrastructure failures: Hardware malfunctions, network outages, or power disruptions
  • Software issues: Bugs, memory leaks, or compatibility problems
  • Security incidents: DDoS attacks, ransomware, or other cyber threats
  • Human error: Accidental configuration changes or improper maintenance

Further reading:

Unplanned Maintenance

Unplanned maintenance, also known as corrective or reactive maintenance, refers to repair work that occurs unexpectedly due to sudden equipment failur...

Unresolved Incident

An unresolved incident is an IT service disruption that remains active in the incident management system without a solution or workaround.

Uptime

Uptime measures how long services are functional without interruptions.