Edited New-AzVm to ensure the PlatformFaultDomain parameter in the VmConfig object is used

src/Compute/Compute.Test/ScenarioTests/VirtualMachineTests.cs

@@ -493,5 +493,12 @@ public void TestGetVirtualMachineById()
         {
             TestRunner.RunTestScript("Test-GetVirtualMachineById");
         }
+
+        [Fact]
+        [Trait(Category.AcceptanceType, Category.CheckIn)]
+        public void TestVirtualMachinePlatformFaultDomain()
+        {
+            TestRunner.RunTestScript("Test-VirtualMachinePlatformFaultDomain");
+        }
     }
 }

src/Compute/Compute.Test/ScenarioTests/VirtualMachineTests.ps1

@@ -5714,3 +5714,84 @@ function Test-GetVirtualMachineById
         Clean-ResourceGroup $rgname;
     }
 }
+
+<#
+.SYNOPSIS
+Test Test GetVirtualMachineById Parameter Set
+#>
+function Test-VirtualMachinePlatformFaultDomain
+{
+    # Setup
+    $rgname = Get-ComputeTestResourceName;
+    $loc = Get-ComputeVMLocation;
+
+    try
+    {
+        New-AzResourceGroup -Name $rgname -Location $loc -Force;
+
+        # VM Profile & Hardware
+        $vmname = 'vm' + $rgname;
+        $domainNameLabel = "d1" + $rgname;
+
+        $vnetname = "myVnet";
+        $vnetAddress = "10.0.0.0/16";
+        $subnetname = "slb" + $rgname;
+        $subnetAddress = "10.0.2.0/24";
+        $vmssName = "vmss" + $rgname;
+        $FaultDomainNumber = 2;
+        $vmssFaultDomain = 3;
+
+        $OSDiskName = $vmname + "-osdisk";
+        $NICName = $vmname+ "-nic";
+        $NSGName = $vmname + "-NSG";
+        $OSDiskSizeinGB = 128;
+        $VMSize = "Standard_DS2_v2";
+        $PublisherName = "MicrosoftWindowsServer";
+        $Offer = "WindowsServer";
+        $SKU = "2019-Datacenter";
+
+
+
+        # Creating a VM using Simple parameterset
+        $securePassword = Get-PasswordForVM | ConvertTo-SecureString -AsPlainText -Force;  
+        $user = "admin01";
+        $cred = New-Object System.Management.Automation.PSCredential ($user, $securePassword);
+
+        $frontendSubnet = New-AzVirtualNetworkSubnetConfig -Name $subnetname -AddressPrefix $subnetAddress;
+
+        $vnet = New-AzVirtualNetwork -Name $vnetname -ResourceGroupName $rgname -Location $loc -AddressPrefix $vnetAddress -Subnet $frontendSubnet;
+
+        $vmssConfig = New-AzVmssConfig -Location $loc -PlatformFaultDomainCount $vmssFaultDomain;
+        $VMSS = New-AzVmss -ResourceGroupName $RGName -Name $VMSSName -VirtualMachineScaleSet $vmssConfig -Verbose;
+
+        $nsgRuleRDP = New-AzNetworkSecurityRuleConfig -Name RDP  -Protocol Tcp  -Direction Inbound -Priority 1001 -SourceAddressPrefix * -SourcePortRange * -DestinationAddressPrefix * -DestinationPortRange 3389 -Access Allow;
+        $nsg = New-AzNetworkSecurityGroup -ResourceGroupName $RGName -Location $loc -Name $NSGName  -SecurityRules $nsgRuleRDP;
+        $nic = New-AzNetworkInterface -Name $NICName -ResourceGroupName $RGName -Location $loc -SubnetId $vnet.Subnets[0].Id -NetworkSecurityGroupId $nsg.Id -EnableAcceleratedNetworking;
+
+        # VM
+        $vmConfig = New-AzVMConfig -VMName $vmName -VMSize $VMSize  -VmssId $VMSS.Id -PlatformFaultDomain $FaultDomainNumber  ;
+        Set-AzVMOperatingSystem -VM $vmConfig -Windows -ComputerName $vmName -Credential $cred ;
+        Set-AzVMOSDisk -VM $vmConfig -StorageAccountType "Premium_LRS" -Caching ReadWrite -Name $OSDiskName -DiskSizeInGB $OSDiskSizeinGB -CreateOption FromImage ;
+        Set-AzVMSourceImage -VM $vmConfig -PublisherName $PublisherName -Offer $Offer -Skus $SKU -Version latest ;
+        Add-AzVMNetworkInterface -VM $vmConfig -Id $nic.Id;
+
+        New-AzVM -ResourceGroupName $RGName -Location $loc -VM $vmConfig ;
+        $vm = Get-AzVm -ResourceGroupName $rgname -Name $vmName;
+
+        Assert-AreEqual $vm.PlatformFaultDomain $FaultDomainNumber;
+
+        # Create VM using Default Parameter set
+        $domainNameLabel = "d1" + $rgname;
+        $vmnameDef = "defvm" + $rgname;
+        $platformFaultDomainVMDefaultSet = 2;
+        $vmDef = New-AzVM -ResourceGroupName $rgname -Name $vmname -Credential $cred -DomainNameLabel $domainNameLabel -PlatformFaultDomain $platformFaultDomainVMDefaultSet -VmssId $VMSS.Id;
+
+        Assert-AreEqual $vmDef.PlatformFaultDomain $platformFaultDomainVMDefaultSet;
+
+    }
+    finally 
+    {
+        # Cleanup
+        Clean-ResourceGroup $rgname;
+    }
+}

src/Compute/Compute/ChangeLog.md

@@ -20,6 +20,7 @@
 
 -->
 ## Upcoming Release
+* Edited `New-AzVm` cmdlet internal logic to use the `PlatformFaultDomain` value in the `PSVirtualMachine` object passed to it in the new virtual machine.
 
 ## Version 4.26.0
 * Added `-ImageReferenceId` parameter to following cmdlets: `New-AzVm`, `New-AzVmConfig`, `New-AzVmss`, `Set-AzVmssStorageProfile`

src/Compute/Compute/VirtualMachine/Operation/NewAzureVMCommand.cs

@@ -821,7 +821,8 @@ public void DefaultExecuteCmdlet()
                         BillingProfile = this.VM.BillingProfile,
                         SecurityProfile = this.VM.SecurityProfile,
                         CapacityReservation = this.VM.CapacityReservation,
-                        UserData = this.VM.UserData
+                        UserData = this.VM.UserData,
+                        PlatformFaultDomain = this.VM.PlatformFaultDomain
                     };
 
                     Dictionary<string, List<string>> auxAuthHeader = null;

src/Compute/Compute/help/New-AzVM.md

@@ -224,6 +224,23 @@ New-AzVm -ResourceGroupName ResourceGroup1 -Location SouthCentralUS -VM $Virtual
 
 This example deploys a Windows VM from the marketplace in one resource group with an existing subnet in another resource group.
 
+### Example 6: Creating a new VM as part of a VMSS with a PlatformFaultDomain value.
+```
+$resourceGroupName= <Resource Group Name>
+$domainNameLabel = <Domain Name Label Name>
+$vmname = "<Virtual Machine Name>
+$platformFaultDomainVMDefaultSet = 2
+$securePassword = <Password> | ConvertTo-SecureString -AsPlainText -Force
+$user = <Username>
+$cred = New-Object System.Management.Automation.PSCredential ($user, $securePassword)
+$vmssName = <Vmss Name>;
+
+$vmssConfig = New-AzVmssConfig -Location $loc -PlatformFaultDomainCount $vmssFaultDomain;
+$vmss = New-AzVmss -ResourceGroupName $resourceGroupName -Name $vmssName -VirtualMachineScaleSet $vmssConfig;
+
+$vm = New-AzVM -ResourceGroupName $resourceGroupName -Name $vmname -Credential $cred -DomainNameLabel $domainNameLabel -PlatformFaultDomain $platformFaultDomainVMDefaultSet -VmssId $vmss.Id
+```
+
 ## PARAMETERS
 
 ### -AddressPrefix