failover

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failover

(reliability)
Automatically switching to a redundant or standby server, system, or network upon the failure or abnormal termination of the currently-active server, system, or network (a "hot standby" or "warm standby"). Failover happens without human intervention. This feature is usually built-in to expensive systems which must be available continuously.

failover

Invoking a secondary system to take over when the primary system fails. Up-to-date copies of all required data and applications are maintained on the secondary system in order to respond immediately if the primary system becomes unusable. Also called "fallover." See replication.
References in periodicals archive ?
The Meteorology Department expected in itsSaturday bulletin that the skies will be partlycloudy in general and local rain showers will fallover different areas.
Zhang has worked out how to use 4G's LTE emergency fallover provisions against itself, forcing mobile devices to connect to an "unsafe" network, such as an attacker's own dodgy base station.
where [DELTA]S--height of needle raise required for the sufficient "loop- fallover" forming.
More Marathon fallout (fallover?) in tomorrow's paper
With product configurations ranging from multisite distributed workgroups to centralized data center grade server clusters with database replication and fallover, this product provides the scalability required by hospitals, clinics, and imaging centers' DICOM data repositories capable of storing from half a terabyte to more than ten terabytes of data annually.
The Meteorology Department expected in itsThursday bulletin that the skies will be clear topartly cloudy in general while the weather will bemisty in the eastern, al-Jazeera and al-Badiyadesert areas and local rain showers will fallover the coastal mountains in the evening and atnight.