ExpressCluster X 2.0 for Windows Reference Guide - Nec

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Chapter 7 Monitor resource details 578 Server1 Server2 Monitor resource Disk TUR monitor resource 1 The final action is executed in server2 because the number of failovers due to failure of disk resource activation has exceeded its threshold. However, note that activation ends abnormally without activating the rest of the group resources in the Failover Group A because “No operation (Next resources are not activated)” is selected as the final action. Server1 Server2 Monitor resource Disk TUR monitor resource 1 Monitor error Shared disk Monitor resource Disk TUR monitor Resource 1 Failover Group A Disk resource 1 Application resource 1 Floating IP resource 1 Monitor error Monitor error Shared disk Monitor resource Disk TUR monitor resource 1 Failover Group A Disk resource 1 Application resource 1 Floating IP resource 1 Monitor error Activating the disk resource 1 due to the failover fails in server2. (failure of fsck, mount ,etc.) Activation failure Server1: Disk TUR monitor resource 1: Failover count 1 Disk Resource 1: Failover count 1 Server2: Disk TUR Monitor Resource 1: Failover count Zero Disk Resource 1: Failover count Once The final action due to the activation failure of the disk resource 1 is executed in server2. Failover group A is activation failure status. Activation failure Server1: Disk TUR monitor resource 1: Failover count 1 Disk resource 1: Failover count 1 Server2: Disk TUR monitor resource 1: Failover count Zero Disk resource 1: Failover count 1 An error can be detected in deactivation of the disk resource depending on the location of the disk device failure. ExpressCluster X 2.0 for Windows Reference Guide
Activation failure Section II Resource details Server1 Server2 Monitor resource Disk TUR monitor resource 1 Monitor error Monitor error Shared disk Server1 Server2 Monitor resource Disk TUR monitor resource 1 Failover Group A Disk Application 1 Floating 1IP resource 1 Shared disk Monitor resource Disk TUR monitor resource 1 Failover Group A Disk resource 1 Application resource Floating 1 IP resource 1 Monitor error Monitor resource Disk TUR monitor resource 1 Monitor error Monitor resources Failover of the failover group A due to detection of the error by the disk TUR monitor resource 1 starts in server2. “Failover threshold” of the monitor resource is a failover count on a server basis. Activation failure Server1: Disk TUR Monitor Resource 1: Failover count 1 Disk Resource 1: Failover count 1 Server2: Disk TUR Monitor Resource 1: Failover count 1 Disk Resource 1 Failover count 1 Activating the disk resource 1 due to failover fails in server1. (failure of fsck, mount, etc.) Server1: Disk TUR Monitor Resource 1: Failover count 1 Disk Resource 1: Failover count 1 Server2: Disk TUR Monitor Resource 1: Failover count 1 Disk Resource 1: Failover count 1 The final action is executed in server1 as is the case in server2 because the number of failovers due to failure of activating the disk resource 1 has exceeded the threshold. However, note that activation ends abnormally without activating the rest of the group resources in the Failover Group A because “No operation (Next resources are not activated)” is selected as the final action. An error can be detected in deactivation of the disk resource depending on the location of the disk device failure. 579
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ExpressCluster ® X 2.0 for Windows
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© Copyright NEC Corporation 2008.
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vi How to verify the status of each
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Network warning light switch off co
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x Service resources................
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xii Displaying NAS monitor resource
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Displaying and changing the details
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xvi IP monitor resource ...........
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ExpressCluster X Documentation Set
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Contacting NEC For the latest produ
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Chapter 1 Functions of the WebManag
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Section I Detailed functions of Exp
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Server Name: Select this to search
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Module type Category pm ExpressClus
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Mirror disk helper Overview of the
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Status Descriptions Server Function
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Collecting logs (clplogcc command)
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Chapter 6 Group resource details Th
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What is a group? Section II Resourc
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X X X When the failover exclusive a
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Displaying the application resource
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Displaying the mirror disk resource
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Server 1 Group A 1 Start Stop Group
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PING network partition resolution r
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The alarms command option -N [targe
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Section III Maintenance information
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Appendix This section covers: • A
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Appendix A Glossary 862 Mirror conn
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Appendix B Index Displaying and cha
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Appendix B Index Floating IP, 435 F
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Appendix B Index Settings of the PI
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