diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk.py
index 945726144fd2..9b732ee4b771 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk.py
@@ -36,7 +36,7 @@ class VirtualMachineScaleSetDataDisk(Model):
     :type create_option: str or
      ~azure.mgmt.compute.v2018_04_01.models.DiskCreateOptionTypes
     :param disk_size_gb: Specifies the size of an empty data disk in
-     gigabytes. This element can be used to overwrite the name of the disk in a
+     gigabytes. This element can be used to overwrite the size of the disk in a
      virtual machine image. <br><br> This value cannot be larger than 1023 GB
     :type disk_size_gb: int
     :param managed_disk: The managed disk parameters.
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk_py3.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk_py3.py
index 8ff1b974e334..d90ede5f54e0 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk_py3.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_data_disk_py3.py
@@ -36,7 +36,7 @@ class VirtualMachineScaleSetDataDisk(Model):
     :type create_option: str or
      ~azure.mgmt.compute.v2018_04_01.models.DiskCreateOptionTypes
     :param disk_size_gb: Specifies the size of an empty data disk in
-     gigabytes. This element can be used to overwrite the name of the disk in a
+     gigabytes. This element can be used to overwrite the size of the disk in a
      virtual machine image. <br><br> This value cannot be larger than 1023 GB
     :type disk_size_gb: int
     :param managed_disk: The managed disk parameters.
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk.py
index 3c27a4373376..b2ac0d43825c 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk.py
@@ -36,6 +36,10 @@ class VirtualMachineScaleSetOSDisk(Model):
      Possible values include: 'FromImage', 'Empty', 'Attach'
     :type create_option: str or
      ~azure.mgmt.compute.v2018_04_01.models.DiskCreateOptionTypes
+    :param disk_size_gb: Specifies the size of the operating system disk in
+     gigabytes. This element can be used to overwrite the size of the disk in a
+     virtual machine image. <br><br> This value cannot be larger than 1023 GB
+    :type disk_size_gb: int
     :param os_type: This property allows you to specify the type of the OS
      that is included in the disk if creating a VM from user-image or a
      specialized VHD. <br><br> Possible values are: <br><br> **Windows**
@@ -62,6 +66,7 @@ class VirtualMachineScaleSetOSDisk(Model):
         'caching': {'key': 'caching', 'type': 'CachingTypes'},
         'write_accelerator_enabled': {'key': 'writeAcceleratorEnabled', 'type': 'bool'},
         'create_option': {'key': 'createOption', 'type': 'str'},
+        'disk_size_gb': {'key': 'diskSizeGB', 'type': 'int'},
         'os_type': {'key': 'osType', 'type': 'OperatingSystemTypes'},
         'image': {'key': 'image', 'type': 'VirtualHardDisk'},
         'vhd_containers': {'key': 'vhdContainers', 'type': '[str]'},
@@ -74,6 +79,7 @@ def __init__(self, **kwargs):
         self.caching = kwargs.get('caching', None)
         self.write_accelerator_enabled = kwargs.get('write_accelerator_enabled', None)
         self.create_option = kwargs.get('create_option', None)
+        self.disk_size_gb = kwargs.get('disk_size_gb', None)
         self.os_type = kwargs.get('os_type', None)
         self.image = kwargs.get('image', None)
         self.vhd_containers = kwargs.get('vhd_containers', None)
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk_py3.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk_py3.py
index a9e21e153d4d..e71cadd64a16 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk_py3.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_os_disk_py3.py
@@ -36,6 +36,10 @@ class VirtualMachineScaleSetOSDisk(Model):
      Possible values include: 'FromImage', 'Empty', 'Attach'
     :type create_option: str or
      ~azure.mgmt.compute.v2018_04_01.models.DiskCreateOptionTypes
+    :param disk_size_gb: Specifies the size of the operating system disk in
+     gigabytes. This element can be used to overwrite the size of the disk in a
+     virtual machine image. <br><br> This value cannot be larger than 1023 GB
+    :type disk_size_gb: int
     :param os_type: This property allows you to specify the type of the OS
      that is included in the disk if creating a VM from user-image or a
      specialized VHD. <br><br> Possible values are: <br><br> **Windows**
@@ -62,18 +66,20 @@ class VirtualMachineScaleSetOSDisk(Model):
         'caching': {'key': 'caching', 'type': 'CachingTypes'},
         'write_accelerator_enabled': {'key': 'writeAcceleratorEnabled', 'type': 'bool'},
         'create_option': {'key': 'createOption', 'type': 'str'},
+        'disk_size_gb': {'key': 'diskSizeGB', 'type': 'int'},
         'os_type': {'key': 'osType', 'type': 'OperatingSystemTypes'},
         'image': {'key': 'image', 'type': 'VirtualHardDisk'},
         'vhd_containers': {'key': 'vhdContainers', 'type': '[str]'},
         'managed_disk': {'key': 'managedDisk', 'type': 'VirtualMachineScaleSetManagedDiskParameters'},
     }
 
-    def __init__(self, *, create_option, name: str=None, caching=None, write_accelerator_enabled: bool=None, os_type=None, image=None, vhd_containers=None, managed_disk=None, **kwargs) -> None:
+    def __init__(self, *, create_option, name: str=None, caching=None, write_accelerator_enabled: bool=None, disk_size_gb: int=None, os_type=None, image=None, vhd_containers=None, managed_disk=None, **kwargs) -> None:
         super(VirtualMachineScaleSetOSDisk, self).__init__(**kwargs)
         self.name = name
         self.caching = caching
         self.write_accelerator_enabled = write_accelerator_enabled
         self.create_option = create_option
+        self.disk_size_gb = disk_size_gb
         self.os_type = os_type
         self.image = image
         self.vhd_containers = vhd_containers
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk.py
index 1f48890ba840..937e6570a99f 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk.py
@@ -22,6 +22,10 @@ class VirtualMachineScaleSetUpdateOSDisk(Model):
     :param write_accelerator_enabled: Specifies whether writeAccelerator
      should be enabled or disabled on the disk.
     :type write_accelerator_enabled: bool
+    :param disk_size_gb: Specifies the size of the operating system disk in
+     gigabytes. This element can be used to overwrite the size of the disk in a
+     virtual machine image. <br><br> This value cannot be larger than 1023 GB
+    :type disk_size_gb: int
     :param image: The Source User Image VirtualHardDisk. This VirtualHardDisk
      will be copied before using it to attach to the Virtual Machine. If
      SourceImage is provided, the destination VirtualHardDisk should not exist.
@@ -36,6 +40,7 @@ class VirtualMachineScaleSetUpdateOSDisk(Model):
     _attribute_map = {
         'caching': {'key': 'caching', 'type': 'CachingTypes'},
         'write_accelerator_enabled': {'key': 'writeAcceleratorEnabled', 'type': 'bool'},
+        'disk_size_gb': {'key': 'diskSizeGB', 'type': 'int'},
         'image': {'key': 'image', 'type': 'VirtualHardDisk'},
         'vhd_containers': {'key': 'vhdContainers', 'type': '[str]'},
         'managed_disk': {'key': 'managedDisk', 'type': 'VirtualMachineScaleSetManagedDiskParameters'},
@@ -45,6 +50,7 @@ def __init__(self, **kwargs):
         super(VirtualMachineScaleSetUpdateOSDisk, self).__init__(**kwargs)
         self.caching = kwargs.get('caching', None)
         self.write_accelerator_enabled = kwargs.get('write_accelerator_enabled', None)
+        self.disk_size_gb = kwargs.get('disk_size_gb', None)
         self.image = kwargs.get('image', None)
         self.vhd_containers = kwargs.get('vhd_containers', None)
         self.managed_disk = kwargs.get('managed_disk', None)
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk_py3.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk_py3.py
index 420daf4f2dcf..feb0156c7a78 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk_py3.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_update_os_disk_py3.py
@@ -22,6 +22,10 @@ class VirtualMachineScaleSetUpdateOSDisk(Model):
     :param write_accelerator_enabled: Specifies whether writeAccelerator
      should be enabled or disabled on the disk.
     :type write_accelerator_enabled: bool
+    :param disk_size_gb: Specifies the size of the operating system disk in
+     gigabytes. This element can be used to overwrite the size of the disk in a
+     virtual machine image. <br><br> This value cannot be larger than 1023 GB
+    :type disk_size_gb: int
     :param image: The Source User Image VirtualHardDisk. This VirtualHardDisk
      will be copied before using it to attach to the Virtual Machine. If
      SourceImage is provided, the destination VirtualHardDisk should not exist.
@@ -36,15 +40,17 @@ class VirtualMachineScaleSetUpdateOSDisk(Model):
     _attribute_map = {
         'caching': {'key': 'caching', 'type': 'CachingTypes'},
         'write_accelerator_enabled': {'key': 'writeAcceleratorEnabled', 'type': 'bool'},
+        'disk_size_gb': {'key': 'diskSizeGB', 'type': 'int'},
         'image': {'key': 'image', 'type': 'VirtualHardDisk'},
         'vhd_containers': {'key': 'vhdContainers', 'type': '[str]'},
         'managed_disk': {'key': 'managedDisk', 'type': 'VirtualMachineScaleSetManagedDiskParameters'},
     }
 
-    def __init__(self, *, caching=None, write_accelerator_enabled: bool=None, image=None, vhd_containers=None, managed_disk=None, **kwargs) -> None:
+    def __init__(self, *, caching=None, write_accelerator_enabled: bool=None, disk_size_gb: int=None, image=None, vhd_containers=None, managed_disk=None, **kwargs) -> None:
         super(VirtualMachineScaleSetUpdateOSDisk, self).__init__(**kwargs)
         self.caching = caching
         self.write_accelerator_enabled = write_accelerator_enabled
+        self.disk_size_gb = disk_size_gb
         self.image = image
         self.vhd_containers = vhd_containers
         self.managed_disk = managed_disk
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm.py
index 204a62f62a0c..5d88cc259a93 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm.py
@@ -97,6 +97,8 @@ class VirtualMachineScaleSetVM(Resource):
     :ivar resources: The virtual machine child extension resources.
     :vartype resources:
      list[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineExtension]
+    :ivar zones: The virtual machine zones.
+    :vartype zones: list[str]
     """
 
     _validation = {
@@ -111,6 +113,7 @@ class VirtualMachineScaleSetVM(Resource):
         'instance_view': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'resources': {'readonly': True},
+        'zones': {'readonly': True},
     }
 
     _attribute_map = {
@@ -134,6 +137,7 @@ class VirtualMachineScaleSetVM(Resource):
         'license_type': {'key': 'properties.licenseType', 'type': 'str'},
         'plan': {'key': 'plan', 'type': 'Plan'},
         'resources': {'key': 'resources', 'type': '[VirtualMachineExtension]'},
+        'zones': {'key': 'zones', 'type': '[str]'},
     }
 
     def __init__(self, **kwargs):
@@ -153,3 +157,4 @@ def __init__(self, **kwargs):
         self.license_type = kwargs.get('license_type', None)
         self.plan = kwargs.get('plan', None)
         self.resources = None
+        self.zones = None
diff --git a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm_py3.py b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm_py3.py
index bf822844f993..ac05a0f168c4 100644
--- a/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm_py3.py
+++ b/azure-mgmt-compute/azure/mgmt/compute/v2018_04_01/models/virtual_machine_scale_set_vm_py3.py
@@ -97,6 +97,8 @@ class VirtualMachineScaleSetVM(Resource):
     :ivar resources: The virtual machine child extension resources.
     :vartype resources:
      list[~azure.mgmt.compute.v2018_04_01.models.VirtualMachineExtension]
+    :ivar zones: The virtual machine zones.
+    :vartype zones: list[str]
     """
 
     _validation = {
@@ -111,6 +113,7 @@ class VirtualMachineScaleSetVM(Resource):
         'instance_view': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'resources': {'readonly': True},
+        'zones': {'readonly': True},
     }
 
     _attribute_map = {
@@ -134,6 +137,7 @@ class VirtualMachineScaleSetVM(Resource):
         'license_type': {'key': 'properties.licenseType', 'type': 'str'},
         'plan': {'key': 'plan', 'type': 'Plan'},
         'resources': {'key': 'resources', 'type': '[VirtualMachineExtension]'},
+        'zones': {'key': 'zones', 'type': '[str]'},
     }
 
     def __init__(self, *, location: str, tags=None, hardware_profile=None, storage_profile=None, os_profile=None, network_profile=None, diagnostics_profile=None, availability_set=None, license_type: str=None, plan=None, **kwargs) -> None:
@@ -153,3 +157,4 @@ def __init__(self, *, location: str, tags=None, hardware_profile=None, storage_p
         self.license_type = license_type
         self.plan = plan
         self.resources = None
+        self.zones = None