Kokonaiskäytettävyys

Kokonaiskäytettävyys, often translated as Total Availability, is a concept used to describe the overall availability of a system or service. It considers all the factors that can influence whether a system is operational and accessible to its users. This includes not only the uptime of the primary components but also the reliability of supporting infrastructure, such as power, network connectivity, and cooling systems.

The calculation of kokonaiskäytettävyys typically involves assessing the probability of failure for each component and the duration of any downtime. A high kokonaiskäytettävyys indicates a robust and dependable system that is consistently available when needed. Conversely, a low kokonaiskäytettävyys suggests a system prone to disruptions and a higher risk of unavailability.

Achieving high kokonaiskäytettävyys requires a comprehensive approach to system design, implementation, and maintenance. This often involves redundancy in critical components, robust monitoring and alerting systems, and well-defined disaster recovery plans. Regular testing and performance analysis are also crucial to identify potential weaknesses and ensure that the system continues to meet its availability targets over time. In essence, kokonaiskäytettävyys provides a holistic view of a system's readiness and reliability from an end-user perspective.