Overview of MSCS
MSCS is a built-in service of Windows 2003 Enterprise and Datacenter Editions. MSCS is used to form a server cluster, which, as mentioned earlier, is a group of independent servers working collectively as a single system. The purpose of the cluster is to preserve client access to applications and other resources in the event of a failure or planned outage. If one of the servers in the cluster is unavailable for any reason, the resources and applications move to another node in the cluster.
When we talk about clustered systems, we generally use the term "high availability" rather than "fault tolerant." Traditionally, the term "fault tolerant" refers to a specialized system that offers an extremely high level of redundancy, resilience, ...
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