HP Serviceguard manual Legal Notices

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Legal Notices

The information contained in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Copyright © 2001–2007 Hewlett-Packard Development Company, L.P.

This document contains information which is protected by copyright. All rights are reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

HP OpenView, HP OpenView IT/Operations, and Serviceguard are products of Hewlett-Packard Company, and all are protected by copyright.

Corporate Offices:

Hewlett-Packard Co.

3000 Hanover St.

Palo Alto, CA 94304

Use, duplication or disclosure by the U.S. Government Department of Defense is subject to restrictions as set forth in paragraph (b)(3)(ii) of the Rights in Technical Data and Software clause in FAR 52.227-7013.

Rights for non-DOD U.S. Government Departments and Agencies are as set forth in FAR 52.227-19(c)(1,2).

Use of this manual and flexible disc(s), compact disc(s), or tape cartridge(s) supplied for this pack is restricted to this product only. Additional copies of the programs may be made for security and back-up purposes only. Resale of the programs in their present form or with alterations, is expressly prohibited.

A copy of the specific warranty terms applicable to your Hewlett-Packard product and replacement parts can be obtained from your local Sales and Service Office.

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Contents Arbitration For Data Integrity Serviceguard Clusters Manufacturing Part Number B3936-90078 JulyLegal Notices Arbitration for Data Integrity in Serviceguard Clusters Cluster Membership Concepts MembershipCluster Membership Concepts Quorum Split-BrainTie-Breaking Multiple Heartbeat Failures To Arbitrate or Not to ArbitrateNo Arbitration-Multiple Paths No Arbitration-Multiple Media Single Node FailureMultiple Paths with Different Media Additional Multiple Paths with Different MediaNo Arbitration-Risks Startup and Re-Formation How Serviceguard Uses ArbitrationCluster Startup Cluster Lock Dynamic Cluster Re-FormationCluster Quorum and Cluster Locking No Cluster Lock Lock Requirements Use of a Lock Disk as the Cluster Lock Lock Disk OperationSingle Cluster Lock Dual Cluster LockUse of a Lock LUN as the Cluster Lock Oot Irror Lock LUN OperationUse of a Quorum Server as the Cluster Lock Quorum Server OperationSetting up the Quorum Server Running the Quorum ServerSpecifying a Quorum Server Quorum Server Status and StateViewing Quorum Server Status and State Viewing Quorum Server System DataUse of Arbitrator Nodes Use of Arbitrator NodeMetropolitan Clusters Arbitration in Disaster-Tolerant ClustersExtended Distance Clusters Arbitrator Nodes Quorum ServerContinental Clusters Use of Dual Lock Disks in Extended Distance ClustersDisk area is not mirrored Arbitration for Data Integrity in Serviceguard Clusters Comparison of Different Arbitration Methods Arbitration Advantages Disadvantages ModeSummary Arbitration for Data Integrity in Serviceguard Clusters Summary
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