Windows 2000 Failover Clustering

Continuous uptime in a production environment, whether it is a database powering a mission-critical client/server application or an e-commerce Web site, is becoming a common businesses requirement. This chapter describes Microsoft® SQL Server™ 2000 failover clustering, one method of creating high availability. Failover clustering is available only in SQL Server 2000 Enterprise Edition.

Failover clustering is a process in which the operating system and application software work together to provide continuous availability in the event of an application failure, hardware failure, or operating-system error. Failover clustering provides hardware redundancy through a configuration in which other servers essentially act as clones of the main production system. Failover clustering also allows system maintenance to be performed on a computer while another node does the work. This benefit can also ensure that system downtime due to normal maintenance is minimized.

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