文档介绍：Clustering Configuration
Date: 85/10/25 Ver:
Configuring Two Node Microsoft Windows Server
2003 Cluster Step by Step
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Clustering Configuration
Date: 85/10/25 Ver:
Document's History
Date Status Author Version
1385/10/25 Create Hamid Reza Molahadi
Introduction
A server cluster is a group of independent servers working collectively via clustering software such
as the Microsoft Cluster Service (MSCS). Server clusters provide high availability, failback,
scalability, and manageability for resources and applications. Thus, server clusters facilitate
uninterrupted client access to applications and server resources in the event of failures and planned
outages. If one of the servers in the cluster is unavailable because of a failure or other downtime,
clients utilize resources and applications from other available cluster nodes.
Windows clustering solutions use the term “high availability” rather than “fault tolerant” because
fault-tolerance implies a high degree of hardware redundancy plus specialized software resulting in
near-instantaneous recovery from any single hardware or software fault. These solutions cost
significantly more than a Windows clustering solution anizations must buy redundant
hardware that runs in an idle state in anticipation of a fault.
Server clusters do not guarantee non-stop operation, but they usually provide sufficient availability
for most mission-critical applications. The cluster service can monitor applications and resources
and automatically recognize and recover from many failure conditions. Automatic failure recognition
and recovery provides flexibility in managing the workload within a cluster. It also improves overall
system availability.
There are additional benefits when you use virtual machines for clustering. Virtual machines allow
multiple operating systems to run on one puter,