High Availability (HA)
Definition - What does High Availability (HA) mean?
High availability refers to systems that are durable and likely to operate continuously without failure for a long time. The term implies that parts of a system have been fully tested and, in many cases, that there are accommodations for failure in the form of redundant components.
Techopedia explains High Availability (HA)
Although good design factors into high availability, it's also important that each piece of hardware be evaluated for durability. Here, specific metrics from vendors are helpful in determining for exactly how long a piece of hardware is estimated to function in a particular system. Here, metrics like mean time between failures (MTBF) become useful to engineers.
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