storageAccount-existing.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "location": {
      "type": "string",
      "metadata": {
        "Description": "Specifies the location of the storage account."
      }
    },
    "vhdStorageAccount": {
      "type": "string",
      "metadata": {
        "Description": "Specifies the name of the storage account used for virtual machine disks. This has to be a unique name, up to 24 chars, all lowercase."
      }
    },
    "vhdStorageType": {
      "type": "string",
      "allowedValues": [
        "Standard_LRS",
        "Standard_GRS",
        "Standard_RAGRS",
        "Premium_LRS"
      ],
      "metadata": {
        "Description": "Specifies the type of storage account, if being created."
      },
      "defaultValue": "Premium_LRS"
    },
    "vhdStorageGroup": {
      "type": "string",
      "metadata": {
        "Description": "Specifies the resource group which should contain the storage account."
      }
    }
  },
  "resources": [ ],
  "outputs": {
    "storageAccountId": {
      "value": "[resourceId(parameters('vhdStorageGroup'),'Microsoft.Storage/StorageAccounts', parameters('vhdStorageAccount'))]",
      "type": "string"
    }
  }
}