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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
Virtual Machines
Introduction
VM and storage affinity rules
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Failure/Recovery from failure of Site/Node Appendices Day 1 operations Managing and monitoring clusters with Windows Admin Center Dell OpenManage Integration with Windows Admin Center Updates and maintenance References

VM and storage affinity rules

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 > VM and storage affinity rules

VM and storage affinity rules

  • You can use PowerShell to create affinity and anti-affinity rules for your VMs in a cluster. An affinity rule is one that establishes a relationship between two or more resource groups or roles, such as VMs, to keep them together in an Azure Stack HCI cluster. An anti-affinity rule does the opposite, keeping specified resource groups apart from each other.

    You can use storage affinity rules to keep a VM and its associated Virtual Hard Disk v2 (VHDX) on a Cluster Shared Volume (CSV) on the same cluster node. This ensures CSV redirection does not occur and keeps application performance at optimal levels. For more information, see Storage affinity rules.