(かようせい)

かようせい
noun
availability (IT)
formaltechnical
1. availability
In IT and systems engineering, the degree to which a system or service is operational and accessible when needed. One of the key metrics for measuring system reliability.
システム可用性(かようせい)(たか)める
We improve the availability of the system.
可用性(かようせい)99.9%目標(もくひょう)にしている
We are targeting 99.9% availability.
We achieved high availability through redundant configuration.

可用性(かようせい) is a technical IT term referring to system uptime and accessibility.

Common collocations

  • (たか)可用性(かようせい): high availability (HA)
  • 可用性(かようせい)確保(かくほ)する: to ensure availability
  • 可用性(かようせい)向上(こうじょう)させる: to improve availability

Related words

Technical note

Availability is often expressed as a percentage (e.g., 99.9% = "three nines"). The term is part of the IT triad of 機密性(きみつせい) (confidentiality), 完全性(かんぜんせい) (integrity), and 可用性(かようせい) (availability), known as CIA.