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failover
Last modified: Thursday, October 07, 2004 

A backup operation that automatically switches to a standby database, server or network if the primary system fails or is temporarily shut down for servicing. Failover is an important fault tolerance function of mission-critical systems that rely on constant accessibility. Failover automatically and transparently to the user redirects requests from the failed or down system to the backup system that mimics the operations of the primary system.
Related Categories

Databases

Network Management

Networks

Servers
Related Terms

clustering

data mirroring

disk mirroring

fail soft

fault tolerance

IP

load balancing

network-attached storage

server farm

server mirroring

TCP/IP
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