Manufacturing Part Number B3936-90078 July | HP Serviceguard

Arbitration For Data Integrity in

Serviceguard Clusters

Manufacturing Part Number : B3936-90078

July 2007

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HP manual Arbitration For Data Integrity Serviceguard Clusters, Manufacturing Part Number B3936-90078 July

Contents

Manufacturing Part Number B3936-90078 July Arbitration For Data Integrity Serviceguard Clusters Legal Notices Arbitration for Data Integrity in Serviceguard Clusters Membership Cluster Membership Concepts Cluster Membership Concepts Split-Brain Quorum Tie-Breaking No Arbitration-Multiple Paths To Arbitrate or Not to ArbitrateMultiple Heartbeat Failures Single Node Failure No Arbitration-Multiple Media Additional Multiple Paths with Different Media Multiple Paths with Different Media No Arbitration-Risks Cluster Startup How Serviceguard Uses ArbitrationStartup and Re-Formation Cluster Quorum and Cluster Locking Dynamic Cluster Re-FormationCluster Lock No Cluster Lock Lock Requirements Lock Disk Operation Use of a Lock Disk as the Cluster Lock Dual Cluster Lock Single Cluster Lock Use of a Lock LUN as the Cluster Lock Lock LUN Operation Oot Irror Quorum Server Operation Use of a Quorum Server as the Cluster Lock Running the Quorum Server Setting up the Quorum Server Quorum Server Status and State Specifying a Quorum Server Viewing Quorum Server System Data Viewing Quorum Server Status and State Use of Arbitrator Node Use of Arbitrator Nodes Extended Distance Clusters Arbitration in Disaster-Tolerant ClustersMetropolitan Clusters Quorum Server Arbitrator Nodes Use of Dual Lock Disks in Extended Distance Clusters Continental Clusters Disk area is not mirrored Arbitration for Data Integrity in Serviceguard Clusters Summary Arbitration Advantages Disadvantages ModeComparison of Different Arbitration Methods Arbitration for Data Integrity in Serviceguard Clusters Summary