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high availability
(redirected from High-availability)

   Also found in: Wikipedia 0.01 sec.

high availability

Also called "RAS" (reliability, availability, serviceability) or "fault resilient," it refers to a multiprocessing system that can quickly recover from a failure. There may be a minute or two of downtime while one system switches over to another, but processing will continue. This is not the same as fault tolerant, in which redundant components are designed for continuous processing without skipping a heartbeat.

High availability also refers to being able to service a component in the system without shutting down the entire operation. See clustering and hot fix.



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The rise of MySQL's popularity in the enterprise has not been paralleled by a rise of cost-efficient, high-availability database technology options that can support business-critical applications," said Susan Eustis, President, WinterGreen Research.
Our customers have been looking for a more affordable and flexible solution to high-availability and fault-tolerance," said Wayne Dunn, senior director of enterprise computing at AimNet Solutions.
We chose to partner with Marathon because their proven approach to providing high-availability solutions met our customers' needs, and their solutions work seamlessly with our systems.
 
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