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E2E Deployment and Operations Guide with Stretched Cluster: Integrated System for Microsoft Azure Stack HCI
Introduction Solution overview Solution deployment Creating a stretched cluster
Creating a stretched cluster
Introduction
Test-Cluster
Cluster creation
Configuring host networking
Creating a cluster
Creating required intents for a stretched cluster
Volumes
Storage efficiency
Test-SRTopology
Virtual Machines 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

Creating required intents for a stretched cluster

Creating required intents for a stretched cluster 

  • #Create sites for Stretch Cluster
    ############not needed if AD Sites are created.
    New-ClusterFaultDomain -Name Bangalore -Type Site -Description "Primary" -Location "Bangalore Datacenter"  
    New-ClusterFaultDomain -Name Chennai -Type Site -Description "Secondary" -Location "Chennai Datacenter"

    Set-ClusterFaultDomain -Name AX6515RN1 -Parent Bangalore  
    Set-ClusterFaultDomain -Name AX6515RN2 -Parent Bangalore  
    Set-ClusterFaultDomain -Name AX6515RN3 -Parent Chennai  
    Set-ClusterFaultDomain -Name AX6515RN4 -Parent Chennai  

    (Get-Cluster).PreferredSite="Bangalore"

    ####After completing above steps on all nodes
    # NIC variables
    # Modify to match the deployment requirements
    $mgmt_compute_nics = @('NIC1','NIC2')
    $stretch_nics = @('SLOT 1 Port 1','SLOT 1 Port 2')
    $storage_nics = @('SLOT 3 Port 1','SLOT 3 Port 2')
    $storage_vlans =@(203,204)
    $Mgmt_Vlan=202
    $Stretch_Vlan=210

    # Set QoS Override (only necessary if there’s a deviation from MS recommendations)
    $QoSOverride = New-NetIntentQoSPolicyOverrides
    $QoSOverride.BandwidthPercentage_Cluster = 2
    $QoSOverride.PriorityValue8021Action_Cluster = 5

    # RDMA/JumboPacket Override for Management NIC (Optional - only if RDMA is not needed on Mgmt + Compute Intent)
    $MgmtAdapterPropertyOverrides = New-NetIntentAdapterPropertyOverrides
    $MgmtAdapterPropertyOverrides.NetworkDirect = 0
    $MgmtAdapterPropertyOverrides.JumboPacket = 9014
    $StorAdapterPropertyOverrides = New-NetIntentAdapterPropertyOverrides
    $StorAdapterPropertyOverrides.JumboPacket = 9014
    $StrAdapterPropertyOverrides = New-NetIntentAdapterPropertyOverrides
    $StrAdapterPropertyOverrides.NetworkDirect = 0

    # Create Management and Compute Intent
    Add-NetIntent -Name Management_Compute -Management -Compute -AdapterName $mgmt_compute_nics  -AdapterPropertyOverrides $MgmtAdapterPropertyOverrides

    # Create Storage Intent
    Add-NetIntent -Name Storage -Storage -AdapterName $storage_nics -StorageVLANs $storage_vlans -QosPolicyOverrides $QoSOverride -AdapterPropertyOverrides $StorAdapterPropertyOverrides

    # Create Stretch Intent
    $site1Override = New-NetIntentSiteOverrides
    $site1Override.Name = "Bangalore"
    $site1Override.StretchVLAN = 210

    $site2Override = New-NetIntentSiteOverrides
    $site2Override.Name = "Chennai"
    $site2Override.StretchVLAN = 210


    Add-NetIntent -Name Stretch -Stretch -AdapterName $stretch_nics  -QosPolicyOverrides $QoSOverride -AdapterPropertyOverrides $AdapterOverride -SiteOverrides $site1Override, $site2Override

    Note: All interfaces across both sites have to be in the same IP range if you use Network ATC. If that is not possible use untagged VLANs for management and replica network to work around this.