Server Clusters : Architecture Overview

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Server Clusters : Architecture Overview
For Windows Server 2003

Microsoft Corporation

Published: March 2003

Abstract

Server clusters are one of two Microsoft( Windows( clustering technologies available for the Microsoft Windows Server family of products. Windows Server 2003 clusters provide failover support for back-end applications and services that require high availability and data integrity. These back-end applications include enterprise applications such as database, file server, enterprise resource planning (ERP), and messaging systems. This white paper focuses on the architecture and features of the cluster service and describes its terminology, concepts, design goals, key components, and planned future directions.

The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publication.

This document is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AS TO THE INFORMATION IN THIS DOCUMENT.

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Content

Contentiii

Introduction5

Development Background5

Cluster Terminology7

Server Clusters7

Virtual Servers9

Resource Groups11

Server Cluster Architecture12

Cluster Service Components12

Node Manager13

Database Manager14

Checkpoint Manager15

Log Manager15

Failover Manager15

Failover16

Failback16

Global Update Manager17

Backup/Restore Manager17

Eventlog Replication Manager17

Membership Manager18

Non-Cluster Service Components18

Resource Monitors18

Event Service19

Cluster Quorum21

Standard Quorum21

Majority Node Set Quorums22

Cluster Resources24

Cluster Administration26

Cluster Formation and Operation27

Creating a Cluster27

Forming a Cluster27

Joining a Cluster28

Leaving a Cluster28

Failure Detection30

Detecting Node Failures30

Detecting Resource Failures30

Future Directions32

For More Information33

Books33

Related Links33

Introduction

First designed for the Microsoft Windows NT® Server 4.0 operating system, server clusters are substantially enhanced in the Microsoft Windows Server 2003, Enterprise Edition, and Windows Server 2003, Datacenter Edition, operating systems. With server clusters you can connect multiple servers...
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