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SQL 2005 introduced High Availability and scalability enhancements, such as database mirroring (this version) and improved failover clustering from earlier versions. Microsoft is shooting for close to zero downtime with the launch of SQL 2008 by incorporating availability and recovery features that were previously only available in third-party solutions. These features include prioritization management, hot-swap replication and the ability to recover off of a mirrored server. This whitepaper will discuss the evolution of High Availability from SQL 2005 to SQL 2008, and the tools available to minimize downtime in the Enterprise.
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