SQL Server 2000 Failover Clustering

SQL Server 2000 Failover Clustering Consulting Services

Users demand not only performance and scalability, but availability of the applications they use. Achieving high availability requires a whole solution, part of which includes the SQL Server 2000 Server 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 business requirement. This paper describes Microsoft® SQL Server 2000 failover clustering, one method of creating high availability. Failover clustering is available only in SQL Server 2000 Enterprise Edition. 

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SQL Failover Clustering Overview

Failover clustering is a process in which the operating system and SQL Server 2000 work together to provide availability in the event of an application failure, hardware failure, or operating-system error. Failover clustering provides hardware redundancy through a configuration in which mission critical resources are transferred from a failing machine to an equally configured server automatically. 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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SQL Server 2000 Failover Clustering Goals

The goal of failover clustering is to provide high availability for an overall scale-up and scale-out solution that accommodates backups, redundancy, and performance. If software and/or hardware problems occur, failover clustering combined with other high availability methods (such as SQL Server 2000 log shipping) can enable a production environment to be up and running in a short amount of time.

However, failover clustering is not a load balancing solution and it cannot protect your system against external threats, catastrophic software failures to all nodes of the cluster, single points of failure (such as non-redundant hardware), or natural disasters.

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