Problem with SQL Virtual Machine deployment - timeout after 1:30h

Hello, 

I am trying to automatise deployment of SQL Virtual Machine in some existing resource group in West Europe. I have prepared some template and trying deploy vm from this template. I am using PowerShell and invoke command like: 

Template and Param file is just taken from SQL VM creation via portal.

Scenario is always the same. Disk, NetworkInterface and Virtual Machine is deployed successfully, but if it comes to SqlVirtualMachine then it stuck in status like: New-AzResourceGroupDeployment

STATUS: Created, PROVISIONING STATE: Running

and got timeout after ~1:30h

At the end I have online VirtualMachine and SqlVirtualMachine is in offline state with information like: 
The SQL virtual machine resource is not in a valid state for management. The cause could be the SQL virtual machine is in bad states, the underlying virtual machine state is invalid (Example: stopped, deallocated or failed) or the virtual machine was not found. Please make sure the SQL virtual machine and the underlying virtual machine are healthy.



And the most strange for me is fact, that sometimes deployment finish successfully. This seems to be rare and quite random.

I did some tests and when deployment stuck, then I stopped it and removed SqlVirtualMachine resource. After this I modified template and left only part for SqlVirtualMachine and ran script one more time. In a result I got successful deployment of SqlVirtualMachine. Result is not always the same, but still more often it is successful than full deployment at once. 

So I am looking for solution to make deployment stable. 

In my scripts I also deploy many different VMs (with standard Ubuntu or Windows 2016 server images) and many other type of resources and they are working fine every time. 

I am also curios about role of sqlStorageDeploymentToken field in template. It is given as a parameter but it is not used at all in template. As ready downloaded template had this field then I left it as it was but not sure about its purpose. 

My params file

{"$schema": "......","contentVersion": "1.0.0.0","parameters": {"subnetName": {"value": "data-subnet"
        },"osDiskType": {"value": "Premium_LRS"
        },"dataDisks": {"value": [
                {"lun": 0,"createOption": "attach","caching": "ReadOnly","writeAcceleratorEnabled": false,"id": null,"name": "sql-test-wizard_DataDisk_0","storageAccountType": null,"diskSizeGB": null
                }
            ]
        },"dataDiskResources": {"value": [
                {"name": "sql-test-wizard_DataDisk_0","sku": "Premium_LRS","properties": {"diskSizeGB": 1024,"creationData": {"createOption": "empty"
                        }
                    }
                }
            ]
        },"virtualMachineSize": {"value": "Standard_DS2_v2"
        }, "sqlConnectivityType": {"value": "Private"
        },"sqlPortNumber": {"value": 1433
        },"sqlStorageDisksCount": {"value": 1
        },"sqlStorageWorkloadType": {"value": "General"
        },"sqlStorageDisksConfigurationType": {"value": "NEW"
        },"sqlStorageStartingDeviceId": {"value": 2
        },"sqlStorageDeploymentToken": {"value": 39238
        },"dataPath": {"value": "some path to F drive"
        },"dataDisksLUNs": {"value": [
                0
            ]
        },"logPath": {"value": "some path to F drive"
        },"logDisksLUNs": {"value": [
                0
            ]
        },"tempDbPath": {"value": "some path to F drive"
        },"tempDisksLUNs": {"value": [
                0
            ]
        },"rServicesEnabled": {"value": "false"
        }
    }
}

My template file: 

{"$schema": "...","contentVersion": "1.0.0.0","parameters": {"TagsObject": {"type": "Object"
        },"PrivateIPAddress": {"type": "string"
        },"networkInterfaceName": {"type": "string"
        },"vnetName": {"type": "string" 
        },"subnetName": {"type": "string"
        },"virtualMachineName": {"type": "string"
        },"virtualMachineNameShort": {"type": "string"
        },"osDiskType": {"type": "string"
        },"dataDisks": {"type": "array"
        },"dataDiskResources": {"type": "array"
        },"virtualMachineSize": {"type": "string"
        },"adminUsername": {"type": "string"
        },"adminPassword": {"type": "secureString"
        },"sqlVirtualMachineName": {"defaultValue": "[parameters('virtualMachineNameShort')]","type": "string"
        },"sqlConnectivityType": {"type": "string"
        },"sqlPortNumber": {"type": "int"
        },"sqlStorageDisksCount": {"type": "int"
        },"sqlStorageWorkloadType": {"type": "string"
        },"sqlStorageDisksConfigurationType": {"type": "string"
        },"sqlStorageStartingDeviceId": {"type": "int"
        },"sqlStorageDeploymentToken": {"type": "int"
        },"dataPath": {"type": "string"
        },"dataDisksLUNs": {"type": "array"
        },"logPath": {"type": "string"
        },"logDisksLUNs": {"type": "array"
        },"tempDbPath": {"type": "string"
        },"tempDisksLUNs": {"type": "array"
        },"rServicesEnabled": {"type": "string"
        },"DataDiskName": {"type": "string"   
        }
    },"variables": {"vnetId": "[concat(resourceGroup().id, '/providers/Microsoft.Network/virtualNetworks/', parameters('vnetName'))]","subnetRef": "[concat(variables('vnetId'), '/subnets/', parameters('subnetName'))]"
    },"resources": [
        {"name": "[parameters('networkInterfaceName')]","type": "Microsoft.Network/networkInterfaces","apiVersion": "2019-07-01","location": "[resourceGroup().location]","dependsOn": [],"tags": "[parameters('TagsObject')]","properties": {"ipConfigurations": [
                    {"name": "ipconfig1","properties": {"subnet": {"id": "[variables('subnetRef')]"
                            },"privateIPAddress": "[parameters('PrivateIPAddress')]","privateIPAllocationMethod": "Static"
                        }
                    }
                ]
            }
        },
        {"type": "Microsoft.Compute/disks","apiVersion": "2019-07-01","name": "[parameters('DataDiskName')]","location": "[resourceGroup().location]","tags": "[parameters('TagsObject')]","sku": {"name": "[parameters('dataDiskResources')[copyIndex()].sku]"
            },"properties": "[parameters('dataDiskResources')[copyIndex()].properties]","copy": {"name": "managedDiskResources","count": "[length(parameters('dataDiskResources'))]"
            }
        },
        {"type": "Microsoft.Compute/virtualMachines","apiVersion": "2019-07-01","name": "[parameters('virtualMachineNameShort')]","location": "[resourceGroup().location]","dependsOn": ["managedDiskResources","[concat('Microsoft.Network/networkInterfaces/', parameters('networkInterfaceName'))]"
            ],"tags": "[parameters('TagsObject')]","properties": {"hardwareProfile": {"vmSize": "[parameters('virtualMachineSize')]"
                },"storageProfile": {"osDisk": {"createOption": "fromImage","managedDisk": {"storageAccountType": "[parameters('osDiskType')]"
                        }
                    },"imageReference": {"publisher": "MicrosoftSQLServer","offer": "SQL2016SP2-WS2016","sku": "SQLDEV","version": "latest"
                    },"copy": [
                        {"name": "dataDisks","count": "[length(parameters('dataDisks'))]","input": {"lun": "[parameters('dataDisks')[copyIndex('dataDisks')].lun]","createOption": "[parameters('dataDisks')[copyIndex('dataDisks')].createOption]","caching": "[parameters('dataDisks')[copyIndex('dataDisks')].caching]","writeAcceleratorEnabled": "[parameters('dataDisks')[copyIndex('dataDisks')].writeAcceleratorEnabled]","diskSizeGB": "[parameters('dataDisks')[copyIndex('dataDisks')].diskSizeGB]","managedDisk": {"id": "[coalesce(parameters('dataDisks')[copyIndex('dataDisks')].id, if(equals(parameters('DataDiskName'), json('null')), json('null'), resourceId('Microsoft.Compute/disks', parameters('DataDiskName'))))]","storageAccountType": "[parameters('dataDisks')[copyIndex('dataDisks')].storageAccountType]"
                                }
                            }
                        }
                    ]
                },"networkProfile": {"networkInterfaces": [
                        {"id": "[resourceId('Microsoft.Network/networkInterfaces', parameters('networkInterfaceName'))]"
                        }
                    ]
                },"osProfile": {"computerName": "[parameters('virtualMachineNameShort')]","adminUsername": "[parameters('adminUsername')]","adminPassword": "[parameters('adminPassword')]","windowsConfiguration": {"enableAutomaticUpdates": true,"provisionVmAgent": true
                    }
                }
            }
        },
        {"type": "Microsoft.SqlVirtualMachine/SqlVirtualMachines","apiVersion": "2017-03-01-preview","name": "[parameters('sqlVirtualMachineName')]","location": "[resourceGroup().location]","dependsOn": ["[resourceId('Microsoft.Compute/virtualMachines', parameters('sqlVirtualMachineName'))]"
            ],"properties": {"virtualMachineResourceId": "[resourceId('Microsoft.Compute/virtualMachines', parameters('sqlVirtualMachineName'))]","sqlManagement": "Full","SqlServerLicenseType": "PAYG","AutoPatchingSettings": {"Enable": false
                },"KeyVaultCredentialSettings": {"Enable": false,"CredentialName": ""
                },"StorageConfigurationSettings": {"DiskConfigurationType": "[parameters('sqlStorageDisksConfigurationType')]","StorageWorkloadType": "[parameters('sqlStorageWorkloadType')]","SQLDataSettings": {"LUNs": "[parameters('dataDisksLUNs')]","DefaultFilePath": "[parameters('dataPath')]"
                    },"SQLLogSettings": {"LUNs": "[parameters('logDisksLUNs')]","DefaultFilePath": "[parameters('logPath')]"
                    },"SQLTempDbSettings": {"DefaultFilePath": "[parameters('tempDbPath')]","LUNs": "[parameters('tempDisksLUNs')]"
                    }
                },"ServerConfigurationsManagementSettings": {"SQLConnectivityUpdateSettings": {"ConnectivityType": "[parameters('sqlConnectivityType')]","Port": "[parameters('sqlPortNumber')]","SQLAuthUpdateUserName": "","SQLAuthUpdatePassword": ""
                    },"AdditionalFeaturesServerConfigurations": {"IsRServicesEnabled": "[parameters('rServicesEnabled')]"
                    }
                }
            },"tags": "[parameters('TagsObject')]"
        }
    ],"outputs": {"adminUsername": {"type": "String","value": "[parameters('adminUsername')]"
        }
    }
}