List of Figures

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Figure 1-1. Message Paths Between Software Components While Nodes Are in Normal State

Figure 1-2. Concurrent Reboot

Figure 1-3. Reboot of a Node While the Other Node Is Down or Not Running IRIS FailSafe

Figure 1-4. System Maintenance Shutdown

Figure 1-5. Restart After System Maintenance (No Reboot)

Figure 1-6. System Maintenance Restart With Reboot

Figure 1-7. Node Failure

Figure 1-8. Recovery After Node Failure With the Controlled-Failback Parameter Set to False (or Not Set)

Figure 1-9. Recovery After Node Failure With the Controlled-Failback Parameter Set

Figure 1-10. Node in Normal State Detects a Local Failure

Figure 1-11. Node in Degraded State Detects Local Failure While the Other Node Is in Standby State

Figure 1-12. Node in Degraded State Detects Local Failure While the Other Node Is in Controlled Failback State

Figure 1-13. Node in Controlled Failback State Detects the Failure of a Node in Degraded State

Figure 1-14. Directory Structure of /var/ha