One new feature with clustering in SQL Server 2008 is the removal of the requirement to have one drive letter for each SQL Server instance. This increases the number of instances that each cluster can support and enables increased server consolidation.
Most of the additional enhancements for SQL Server 2008 clustering are only available with the Windows Server 2008 operating system. For example, you can now have up to 16 nodes in a cluster and create a cluster over multiple subnets. In addition, clustering is easier to set up and manage because Windows Server 2008 provides a wizard for many of the configuration tasks.
- SQL Server 2008 removes the requirement to have one drive letter for each SQL Server Instance
- Windows Server 2008 provides enhanced clustering
- Supports up to 16 nodes in a cluster
- Supports clustering over multiple subnets
- Supports OR dependencies:
- example, by ensuring that the network name resource is available if either of the two IP address resources is available
- Contains a cluster validation tools:
- Ensure hardware, software and network compatibility