What is Cluster Service?
A Microsoft Windows NT service in Microsoft Cluster Server (MSCS) that controls cluster activity, communication between cluster servers, and failover operations. (Windows Clustering in Windows 2000 also includes a Cluster service.)
The Cluster service controls all aspects of cluster operation and manages the MSCS configuration database. Each node in a cluster runs its own instance of the Cluster service.
The Cluster service handles the following functions:
- Configuration and management of clustering service objects (nodes, networks, resources, groups, and so on)
- Coordination between all instances of the service running on the cluster
- Failover operations
- Event notification
The Cluster service provides three benefits:
High availability: If one node of a cluster fails, the other node starts providing services, making mission-critical applications continually available to clients. This process is called failover.
Scalability: Using clustering technology, less powerful computer systems can be enhanced when grouped into clusters.
Manageability: Since both nodes of a cluster are managed as a single system, administrative tasks are made easier.