A cluster is a set of independent computers that work together to increase the availability of services and applications. The clustered servers (called nodes) are connected by physical cables and by software. If one of the nodes fails, another node begins to provide service through a process known as failover.
You can use the Microsoft® Management Console (MMC) snap-in, Failover Cluster Manager, to validate failover cluster configurations, create and manage failover clusters, and migrate certain settings to a cluster running the Windows Server® 2008 R2 operating system. You can also configure and manage failover clusters by using Windows PowerShell. These Help topics describe methods for using Failover Cluster Manager. For more information about using Windows PowerShell for failover clusters, see
In Windows Server 2008 and Windows Server 2008 R2, the improvements to failover clusters (formerly known as server clusters in Windows Server 2003) are aimed at simplifying clusters, making them more secure, and enhancing cluster stability. Cluster setup and management are easier. Security and networking in clusters have been improved, as has the way a failover cluster communicates with storage.
Note that the Failover Clustering feature is included in server products such as Windows Server 2008 R2 Enterprise and Windows Server 2008 R2 Datacenter. The Failover Clustering feature is not included in Windows Server 2008 R2 Standard or Windows Web Server 2008 R2.
- Checklist: Create a Failover Cluster
- Checklist: Create a Clustered File Server
- Checklist: Create a Clustered Print Server
- Checklist: Create a Clustered Virtual Machine
- Installing the Failover Clustering Feature
- Validating a Failover Cluster Configuration
- Creating a Failover Cluster or Adding a Cluster Node
- Configuring a Service or Application for High Availability
- Migrating Settings to a Failover Cluster Running Windows Server 2008 R2
- Modifying Settings for a Failover Cluster
- Managing a Failover Cluster
- Resources for Failover Clusters
- User Interface: The Failover Cluster Manager Snap-In
- For a list of links to a variety of topics about failover clusters, see
- For design and deployment information for failover clusters, see
- For troubleshooting information for failover clusters, see
- For operations information for failover clusters, see