{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "adminUsername": {
      "type": "string",
      "metadata": {
        "description": "Admin username for VM"
      }
    },
    "adminPassword": {
      "type": "securestring",
      "metadata": {
        "description": "Admin password for VM"
      }
    },
    "numberOfInstances": {
      "type": "int",
      "defaultValue": 2,
      "metadata": {
        "description": "Number of VMs to deploy"
      }
    },
    "vmSize": {
      "type": "string",
      "defaultValue": "Standard_D1",
      "metadata": {
        "description": "Size of the Virtual Machine."
      }
    },
    "OS": {
      "type": "string",
      "defaultValue": "Ubuntu14.04LTS",
      "allowedValues": [
        "Ubuntu14.04LTS",
        "WindowsServer2012R2"
      ],
      "metadata": {
        "description": "Size of the Virtual Machine."
      }
    }
  },
  "variables": {
    "storageAccountName": "[concat(uniquestring(resourceGroup().id), 'standardsa')]",
    "location": "[resourceGroup().location]",
    "virtualNetworkName": "myVNET",
    "availabilitySetName": "myAvSet",
    "vnetID": "[resourceId('Microsoft.Network/virtualNetworks', variables('virtualNetworkName'))]",
    "addressPrefix": "10.0.0.0/16",
    "subnet1Name": "Subnet-1",
    "subnet1Prefix": "10.0.0.0/24",
    "subnet1Ref": "[concat(variables('vnetID'),'/subnets/', variables('subnet1Name'))]",
    "vmStorageAccountContainerName": "vhds",
    "Ubuntu14.04LTS": {
      "publisher": "Canonical",
      "offer": "UbuntuServer",
      "sku": "14.04.4-LTS",
      "version": "latest"
    },
    "WindowsServer2012R2": {
      "publisher": "MicrosoftWindowsServer",
      "offer": "WindowsServer",
      "sku": "2012-R2-Datacenter",
      "version": "latest"
    },
    "imageReference": "[variables(parameters('OS'))]",
    "apiVersion": "2015-06-15"
  },
  "resources": [
    {
      "type": "Microsoft.Storage/storageAccounts",
      "name": "[variables('storageAccountName')]",
      "apiVersion": "[variables('apiVersion')]",
      "location": "[variables('location')]",
      "properties": {
        "accountType": "Standard_LRS"
      }
    },
    {
      "type": "Microsoft.Compute/availabilitySets",
      "name": "[variables('availabilitySetName')]",
      "apiVersion": "[variables('apiVersion')]",
      "location": "[variables('location')]"
    },
    {
      "apiVersion": "[variables('apiVersion')]",
      "type": "Microsoft.Network/virtualNetworks",
      "name": "[variables('virtualNetworkName')]",
      "location": "[variables('location')]",
      "properties": {
        "addressSpace": {
          "addressPrefixes": [
            "[variables('addressPrefix')]"
          ]
        },
        "subnets": [
          {
            "name": "[variables('subnet1Name')]",
            "properties": {
              "addressPrefix": "[variables('subnet1Prefix')]"
            }
          }
        ]
      }
    },
    {
      "apiVersion": "[variables('apiVersion')]",
      "type": "Microsoft.Network/networkInterfaces",
      "name": "[concat('nic', copyindex())]",
      "location": "[variables('location')]",
      "copy": {
        "name": "nicLoop",
        "count": "[parameters('numberOfInstances')]"
      },
      "dependsOn": [
        "[concat('Microsoft.Network/virtualNetworks/', variables('virtualNetworkName'))]"
      ],
      "properties": {
        "ipConfigurations": [
          {
            "name": "ipconfig1",
            "properties": {
              "privateIPAllocationMethod": "Dynamic",
              "subnet": {
                "id": "[variables('subnet1Ref')]"
              }
            }
          }
        ]
      }
    },
    {
      "apiVersion": "[variables('apiVersion')]",
      "type": "Microsoft.Compute/virtualMachines",
      "name": "[concat('myvm', copyIndex())]",
      "location": "[variables('location')]",
      "copy": {
        "name": "virtualMachineLoop",
        "count": "[parameters('numberOfInstances')]"
      },
      "dependsOn": [
        "[concat('Microsoft.Network/networkInterfaces/', 'nic', copyindex())]",
        "[concat('Microsoft.Storage/storageAccounts/', variables('storageAccountName'))]"
      ],
      "properties": {
        "availabilitySet": {
          "id": "[resourceId('Microsoft.Compute/availabilitySets', variables('availabilitySetName'))]"
        },
        "hardwareProfile": {
          "vmSize": "[parameters('vmSize')]"
        },
        "osProfile": {
          "computerName": "[concat('vm', copyIndex())]",
          "adminUsername": "[parameters('adminUsername')]",
          "adminPassword": "[parameters('adminPassword')]"
        },
        "storageProfile": {
          "imageReference": "[variables('imageReference')]",
          "osDisk": {
            "name": "osdisk",
            "vhd": {
              "uri": "[concat('http://',variables('storageAccountName'),'.blob.core.windows.net/vhds/','osdisk', copyIndex(), '.vhd')]"
            },
            "caching": "ReadWrite",
            "createOption": "FromImage"
          }
        },
        "networkProfile": {
          "networkInterfaces": [
            {
              "id": "[resourceId('Microsoft.Network/networkInterfaces',concat('nic', copyindex()))]"
            }
          ]
        }
      }
    }
  ]
}