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Sql server 2008 failover clustering

SQL Server 2008 Failover Clustering
SQL Server Technical Article

Writers: Mike Weiner, Paul Burpo, Max Verun, Joseph Sack, Justin Erickson
Contributors: Sanjay Mishra, Jason Wu, Uttam Parui
Technical Reviewers: Prem Mehra, James Podgorski, David Whitney, Richard Tkachuk, Sethu Kalavakur, Cindy Gross, Neal Graves, Farzan Ratistari, Ayad Shammout (Caregroup Healthcare Systems), David P. Smith (ServiceU Corporation)

Summary: This white paper complements the existing documentation on planning, implementation, and administration of a SQL Server 2008 failover cluster, which can found in Microsoft SQL Server 2008 Books Online. There are links to relevant existing content throughout the paper, which is intended primarily for a technical audience. This white paper covers failover cluster architecture and concepts for Windows Server and SQL Server 2008; installation of a SQL Server 2008 failover cluster; upgrades and updates to SQL Server 2008 failover clustering; and maintenance and administration of SQL Server 2008.

Copyright
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 white paper is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, AS TO THE INFORMATION IN THIS DOCUMENT.
Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express

written permission of Microsoft Corporation.
Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property.
Unless otherwise noted, the example companies, organizations, products, domain names, e-mail addresses, logos, people, places, and events depicted herein are fictitious, and no association with any real company, organization, product, domain name, e-mail address, logo, person, place, or event is intended or should be inferred.

All other trademarks are property of their respective owners.

Contents
1
Introduction 3
Overview of Windows Server Failover Clustering 3
Topology and Architecture of a SQL Server Cluster 4
Failover Cluster Resource Group 4
Health Detection 5
Resource and Resource Group Properties 5
Resource Properties 5
Resource Group Properties 7
Common SQL Server Failover Deployments 7
Single Failover Cluster Instance 7
Multi-Instance Failover Cluster 8
Multi-Site Failover Cluster 8
Guest Failover Cluster 9


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Sql server 2008 failover clustering