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E2E Deployment and Operations Guide with Stretched Cluster: Integrated System for Microsoft Azure Stack HCI
About using this guide Introduction Solution overview Solution deployment Creating a stretched cluster Virtual Machines Failure/Recovery from failure of Site/Node
Failure/Recovery from failure of Site/Node
Planned failover
Operation steps
Appendices Day 1 operations Managing and monitoring clusters with Windows Admin Center Dell OpenManage Integration with Windows Admin Center Updates and maintenance References

Planned failover

Home > Integrated Products > Microsoft HCI Solutions from Dell Technologies > Guides 22H2 and earlier > E2E Deployment and Operations Guide with Stretched Cluster: Integrated System for Microsoft Azure Stack HCI > Planned failover

Planned failover

  • Windows Admin Center has a Switch Direction feature that allows you to migrate workloads from one site to the other. This must be initiated on each volume. VMs hosted on the volumes follow the volumes to the migrated site after 10 minutes. This feature is helpful in scenarios such as:

    • There is a planned downtime
    • A potential weather event could take the site down

    To use the Switch Direction feature, go to Windows Admin Center and select Storage Replica on the left pane. Then select the SR Partnership for which you would like to change the Replication Direction. Select More and click on Switch Direction.

    In the event of a site failure, if a volume is replicating synchronously then the data and the log volume automatically come online on the surviving site, along with VMs associated with this volume because the RPO is 0. For asynchronous replication the data and the log volume do not come online automatically because the RPO is not equal to 0.

    When the failed site comes back online, the Replica and Replica-Log volume are moved to the primary site with persistent disk reservations, and replication begins again. For a synchronous replicated volume, the replication direction cannot be changed until replication is 100 percent complete.