"resources": [
  { 
    "apiVersion": "2016-04-30-preview", 
    "type": "Microsoft.Compute/virtualMachines", 
    "name": "[concat('myVM', copyindex())]", 
    "location": "[resourceGroup().location]",
    "copy": {
      "name": "virtualMachineLoop",	
      "count": "[parameters('numberOfInstances')]"
    },
    "dependsOn": [
      "[concat('Microsoft.Network/networkInterfaces/myNIC', copyindex())]" 
    ], 
    "properties": { 
      "hardwareProfile": { 
        "vmSize": "Standard_DS1" 
      }, 
      "osProfile": { 
        "computername": "[concat('myVM', copyindex())]", 
        "adminUsername": "[parameters('adminUsername')]", 
        "adminPassword": "[parameters('adminPassword')]" 
      }, 
      "storageProfile": { 
        "imageReference": { 
          "publisher": "MicrosoftWindowsServer", 
          "offer": "WindowsServer", 
          "sku": "2012-R2-Datacenter", 
          "version": "latest" 
        }, 
        "osDisk": { 
          "name": "[concat('myOSDisk', copyindex())]",
          "caching": "ReadWrite", 
          "createOption": "FromImage" 
        },
        "dataDisks": [
          {
            "name": "[concat('myDataDisk', copyindex())]",
            "diskSizeGB": "100",
            "lun": 0,
            "createOption": "Empty"
          }
        ] 
      }, 
      "networkProfile": { 
        "networkInterfaces": [ 
          { 
            "id": "[resourceId('Microsoft.Network/networkInterfaces',
              concat('myNIC', copyindex()))]" 
          } 
        ] 
      },
      "diagnosticsProfile": {
        "bootDiagnostics": {
          "enabled": "true",
          "storageUri": "[concat('https://', variables('storageName'), '.blob.core.windows.net')]"
        }
      } 
    },
    "resources": [ 
      { 
        "name": "Microsoft.Insights.VMDiagnosticsSettings", 
        "type": "extensions", 
        "location": "[resourceGroup().location]", 
        "apiVersion": "2016-03-30", 
        "dependsOn": [ 
          "[concat('Microsoft.Compute/virtualMachines/myVM', copyindex())]" 
        ], 
        "properties": { 
          "publisher": "Microsoft.Azure.Diagnostics", 
          "type": "IaaSDiagnostics", 
          "typeHandlerVersion": "1.5", 
          "autoUpgradeMinorVersion": true, 
          "settings": { 
            "xmlCfg": "[base64(concat(variables('wadcfgxstart'), 
            variables('wadmetricsresourceid'), 
            concat('myVM', copyindex()),
            variables('wadcfgxend')))]", 
            "storageAccount": "[variables('storageName')]" 
          }, 
          "protectedSettings": { 
            "storageAccountName": "[variables('storageName')]", 
            "storageAccountKey": "[listkeys(variables('accountid'), 
              '2015-06-15').key1]", 
            "storageAccountEndPoint": "https://core.windows.net" 
          } 
        } 
      },
      {
        "name": "MyCustomScriptExtension",
        "type": "extensions",
        "apiVersion": "2016-03-30",
        "location": "[resourceGroup().location]",
        "dependsOn": [
          "[concat('Microsoft.Compute/virtualMachines/myVM', copyindex())]"
        ],
        "properties": {
          "publisher": "Microsoft.Compute",
          "type": "CustomScriptExtension",
          "typeHandlerVersion": "1.7",
          "autoUpgradeMinorVersion": true,
          "settings": {
            "fileUris": [
              "[concat('https://', variables('storageName'),
                '.blob.core.windows.net/customscripts/start.ps1')]" 
            ],
            "commandToExecute": "powershell.exe -ExecutionPolicy Unrestricted -File start.ps1"
          }
        }
      } 
    ]
  } 
]