![]() You must have a functional Windows Server failover cluster prior to deploying SQL Server as a failover cluster instance. Windows Server 2008 Enterprise and Datacenter editions support failover clustering but do not support multi-subnet failover clustering. ![]() These editions also support multi-subnet failover clustering. Windows Server 2008 R2 Enterprise and Datacenter editions support failover clustering. SQL Server 2012 Standard edition supports a two-node maximum. SQL Server 2012 Business Intelligence edition supports a two-node maximum for failover clusters. This edition of SQL Server is the only one that you can deploy in a production environment that supports multi-subnet failover clustering. SQL Server 2012 Enterprise edition supports up to 16 cluster nodes. When planning the deployment of a failover cluster instance, remember that: You can deploy failover cluster instances only on specific editions of the host operating system and SQL Server. Prepare the host operating system for the installation of a failover cluster instance of SQL Server 2012.Įstimated lesson time: 60 minutes Fulfilling Edition Prerequisites
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