Cybersecurity Glossary: Terms Explained in Plain English | TecnetOne

What Is High Availability? Definition | TecnetOne Glossary

Written by Tecnet One | Oct 7, 2026, 6:32:40 PM

High availability is the design of systems, networks and applications so they keep running even if one component fails, with minimal downtime. It is achieved by duplicating devices, links or servers so one takes over for another automatically, and it is usually measured as a percentage of uptime, such as 99.9%.

How TecnetOne handles it: Disaster Recovery

HA, redundancy, fault tolerance, uptime