diff --git a/sdk/dell/azure-mgmt-dellstorage/CHANGELOG.md b/sdk/dell/azure-mgmt-dellstorage/CHANGELOG.md
index d4ad3d9c46be..e55103bfa905 100644
--- a/sdk/dell/azure-mgmt-dellstorage/CHANGELOG.md
+++ b/sdk/dell/azure-mgmt-dellstorage/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History
 
+## 1.0.0 (2025-12-29)
+
+### Features Added
+
+  - Model `DellStorageMgmtClient` added parameter `cloud_setting` in method `__init__`
+
 ## 1.0.0b1 (2025-05-07)
 
 ### Other Changes
diff --git a/sdk/dell/azure-mgmt-dellstorage/MANIFEST.in b/sdk/dell/azure-mgmt-dellstorage/MANIFEST.in
index a82c44d4cf3d..81821fcf4912 100644
--- a/sdk/dell/azure-mgmt-dellstorage/MANIFEST.in
+++ b/sdk/dell/azure-mgmt-dellstorage/MANIFEST.in
@@ -1,8 +1,7 @@
-include _meta.json
-recursive-include tests *.py *.json
-recursive-include samples *.py *.md
 include *.md
-include azure/__init__.py
-include azure/mgmt/__init__.py
 include LICENSE
 include azure/mgmt/dellstorage/py.typed
+recursive-include tests *.py
+recursive-include samples *.py *.md
+include azure/__init__.py
+include azure/mgmt/__init__.py
diff --git a/sdk/dell/azure-mgmt-dellstorage/_meta.json b/sdk/dell/azure-mgmt-dellstorage/_metadata.json
similarity index 54%
rename from sdk/dell/azure-mgmt-dellstorage/_meta.json
rename to sdk/dell/azure-mgmt-dellstorage/_metadata.json
index 0cdff1dd9cdb..4a6a41a8424b 100644
--- a/sdk/dell/azure-mgmt-dellstorage/_meta.json
+++ b/sdk/dell/azure-mgmt-dellstorage/_metadata.json
@@ -1,6 +1,7 @@
 {
-  "commit": "a3baecd6571d7e4b979a7aef527d29a3509d4dc7",
+  "apiVersion": "2025-03-21",
+  "commit": "fb25c38a86b35dcf8bb03eaaa7844643bd92c5a2",
   "repository_url": "https://github.com/Azure/azure-rest-api-specs",
   "typespec_src": "specification/dell/Dell.Storage.Management",
-  "@azure-tools/typespec-python": "0.44.1"
+  "emitterVersion": "0.56.1"
 }
\ No newline at end of file
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/__init__.py b/sdk/dell/azure-mgmt-dellstorage/azure/__init__.py
index 8db66d3d0f0f..d55ccad1f573 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/__init__.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/__init__.py
@@ -1 +1 @@
-__path__ = __import__("pkgutil").extend_path(__path__, __name__)
+__path__ = __import__("pkgutil").extend_path(__path__, __name__)  # type: ignore
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/__init__.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/__init__.py
index 8db66d3d0f0f..d55ccad1f573 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/__init__.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/__init__.py
@@ -1 +1 @@
-__path__ = __import__("pkgutil").extend_path(__path__, __name__)
+__path__ = __import__("pkgutil").extend_path(__path__, __name__)  # type: ignore
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_client.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_client.py
index e66042ba0ef5..d4ce1fcc7181 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_client.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_client.py
@@ -22,6 +22,7 @@
 from .operations import FileSystemsOperations, Operations
 
 if TYPE_CHECKING:
+    from azure.core import AzureClouds
     from azure.core.credentials import TokenCredential
 
 
@@ -38,19 +39,27 @@ class DellStorageMgmtClient:
     :type subscription_id: str
     :param base_url: Service host. Default value is None.
     :type base_url: str
-    :keyword api_version: The API version to use for this operation. Default value is
-     "2025-03-21-preview". Note that overriding this default value may result in unsupported
-     behavior.
+    :keyword cloud_setting: The cloud setting for which to get the ARM endpoint. Default value is
+     None.
+    :paramtype cloud_setting: ~azure.core.AzureClouds
+    :keyword api_version: The API version to use for this operation. Default value is "2025-03-21".
+     Note that overriding this default value may result in unsupported behavior.
     :paramtype api_version: str
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no
      Retry-After header is present.
     """
 
     def __init__(
-        self, credential: "TokenCredential", subscription_id: str, base_url: Optional[str] = None, **kwargs: Any
+        self,
+        credential: "TokenCredential",
+        subscription_id: str,
+        base_url: Optional[str] = None,
+        *,
+        cloud_setting: Optional["AzureClouds"] = None,
+        **kwargs: Any
     ) -> None:
         _endpoint = "{endpoint}"
-        _cloud = kwargs.pop("cloud_setting", None) or settings.current.azure_cloud  # type: ignore
+        _cloud = cloud_setting or settings.current.azure_cloud  # type: ignore
         _endpoints = get_arm_endpoints(_cloud)
         if not base_url:
             base_url = _endpoints["resource_manager"]
@@ -59,6 +68,7 @@ def __init__(
             credential=credential,
             subscription_id=subscription_id,
             base_url=cast(str, base_url),
+            cloud_setting=cloud_setting,
             credential_scopes=credential_scopes,
             **kwargs
         )
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_configuration.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_configuration.py
index a076d2338a41..9141e2823a00 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_configuration.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_configuration.py
@@ -6,7 +6,7 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-from typing import Any, TYPE_CHECKING
+from typing import Any, Optional, TYPE_CHECKING
 
 from azure.core.pipeline import policies
 from azure.mgmt.core.policies import ARMChallengeAuthenticationPolicy, ARMHttpLoggingPolicy
@@ -14,6 +14,7 @@
 from ._version import VERSION
 
 if TYPE_CHECKING:
+    from azure.core import AzureClouds
     from azure.core.credentials import TokenCredential
 
 
@@ -29,9 +30,11 @@ class DellStorageMgmtClientConfiguration:  # pylint: disable=too-many-instance-a
     :type subscription_id: str
     :param base_url: Service host. Default value is "https://management.azure.com".
     :type base_url: str
-    :keyword api_version: The API version to use for this operation. Default value is
-     "2025-03-21-preview". Note that overriding this default value may result in unsupported
-     behavior.
+    :param cloud_setting: The cloud setting for which to get the ARM endpoint. Default value is
+     None.
+    :type cloud_setting: ~azure.core.AzureClouds
+    :keyword api_version: The API version to use for this operation. Default value is "2025-03-21".
+     Note that overriding this default value may result in unsupported behavior.
     :paramtype api_version: str
     """
 
@@ -40,9 +43,10 @@ def __init__(
         credential: "TokenCredential",
         subscription_id: str,
         base_url: str = "https://management.azure.com",
+        cloud_setting: Optional["AzureClouds"] = None,
         **kwargs: Any
     ) -> None:
-        api_version: str = kwargs.pop("api_version", "2025-03-21-preview")
+        api_version: str = kwargs.pop("api_version", "2025-03-21")
 
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
@@ -52,6 +56,7 @@ def __init__(
         self.credential = credential
         self.subscription_id = subscription_id
         self.base_url = base_url
+        self.cloud_setting = cloud_setting
         self.api_version = api_version
         self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
         kwargs.setdefault("sdk_moniker", "mgmt-dellstorage/{}".format(VERSION))
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_patch.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_patch.py
index 8bcb627aa475..87676c65a8f0 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_patch.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_patch.py
@@ -7,9 +7,9 @@
 
 Follow our quickstart for examples: https://aka.ms/azsdk/python/dpcodegen/python/customize
 """
-from typing import List
 
-__all__: List[str] = []  # Add all objects you want publicly available to users at this package level
+
+__all__: list[str] = []  # Add all objects you want publicly available to users at this package level
 
 
 def patch_sdk():
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/model_base.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/model_base.py
index 49d5c7259389..75b6936a909c 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/model_base.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/model_base.py
@@ -1,4 +1,4 @@
-# pylint: disable=too-many-lines
+# pylint: disable=line-too-long,useless-suppression,too-many-lines
 # coding=utf-8
 # --------------------------------------------------------------------------
 # Copyright (c) Microsoft Corporation. All rights reserved.
@@ -29,6 +29,7 @@
 from azure.core import CaseInsensitiveEnumMeta
 from azure.core.pipeline import PipelineResponse
 from azure.core.serialization import _Null
+from azure.core.rest import HttpResponse
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -170,6 +171,21 @@ def default(self, o):  # pylint: disable=too-many-return-statements
     r"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s\d{4}\s\d{2}:\d{2}:\d{2}\sGMT"
 )
 
+_ARRAY_ENCODE_MAPPING = {
+    "pipeDelimited": "|",
+    "spaceDelimited": " ",
+    "commaDelimited": ",",
+    "newlineDelimited": "\n",
+}
+
+
+def _deserialize_array_encoded(delimit: str, attr):
+    if isinstance(attr, str):
+        if attr == "":
+            return []
+        return attr.split(delimit)
+    return attr
+
 
 def _deserialize_datetime(attr: typing.Union[str, datetime]) -> datetime:
     """Deserialize ISO-8601 formatted string into Datetime object.
@@ -314,6 +330,8 @@ def _deserialize_int_as_str(attr):
 def get_deserializer(annotation: typing.Any, rf: typing.Optional["_RestField"] = None):
     if annotation is int and rf and rf._format == "str":
         return _deserialize_int_as_str
+    if annotation is str and rf and rf._format in _ARRAY_ENCODE_MAPPING:
+        return functools.partial(_deserialize_array_encoded, _ARRAY_ENCODE_MAPPING[rf._format])
     if rf and rf._format:
         return _DESERIALIZE_MAPPING_WITHFORMAT.get(rf._format)
     return _DESERIALIZE_MAPPING.get(annotation)  # pyright: ignore
@@ -345,16 +363,46 @@ def _get_model(module_name: str, model_name: str):
 
 
 class _MyMutableMapping(MutableMapping[str, typing.Any]):
-    def __init__(self, data: typing.Dict[str, typing.Any]) -> None:
+    def __init__(self, data: dict[str, typing.Any]) -> None:
         self._data = data
 
     def __contains__(self, key: typing.Any) -> bool:
         return key in self._data
 
     def __getitem__(self, key: str) -> typing.Any:
+        # If this key has been deserialized (for mutable types), we need to handle serialization
+        if hasattr(self, "_attr_to_rest_field"):
+            cache_attr = f"_deserialized_{key}"
+            if hasattr(self, cache_attr):
+                rf = _get_rest_field(getattr(self, "_attr_to_rest_field"), key)
+                if rf:
+                    value = self._data.get(key)
+                    if isinstance(value, (dict, list, set)):
+                        # For mutable types, serialize and return
+                        # But also update _data with serialized form and clear flag
+                        # so mutations via this returned value affect _data
+                        serialized = _serialize(value, rf._format)
+                        # If serialized form is same type (no transformation needed),
+                        # return _data directly so mutations work
+                        if isinstance(serialized, type(value)) and serialized == value:
+                            return self._data.get(key)
+                        # Otherwise return serialized copy and clear flag
+                        try:
+                            object.__delattr__(self, cache_attr)
+                        except AttributeError:
+                            pass
+                        # Store serialized form back
+                        self._data[key] = serialized
+                        return serialized
         return self._data.__getitem__(key)
 
     def __setitem__(self, key: str, value: typing.Any) -> None:
+        # Clear any cached deserialized value when setting through dictionary access
+        cache_attr = f"_deserialized_{key}"
+        try:
+            object.__delattr__(self, cache_attr)
+        except AttributeError:
+            pass
         self._data.__setitem__(key, value)
 
     def __delitem__(self, key: str) -> None:
@@ -425,7 +473,7 @@ def pop(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
             return self._data.pop(key)
         return self._data.pop(key, default)
 
-    def popitem(self) -> typing.Tuple[str, typing.Any]:
+    def popitem(self) -> tuple[str, typing.Any]:
         """
         Removes and returns some (key, value) pair
         :returns: The (key, value) pair.
@@ -482,6 +530,8 @@ def _is_model(obj: typing.Any) -> bool:
 
 def _serialize(o, format: typing.Optional[str] = None):  # pylint: disable=too-many-return-statements
     if isinstance(o, list):
+        if format in _ARRAY_ENCODE_MAPPING and all(isinstance(x, str) for x in o):
+            return _ARRAY_ENCODE_MAPPING[format].join(o)
         return [_serialize(x, format) for x in o]
     if isinstance(o, dict):
         return {k: _serialize(v, format) for k, v in o.items()}
@@ -513,9 +563,7 @@ def _serialize(o, format: typing.Optional[str] = None):  # pylint: disable=too-m
     return o
 
 
-def _get_rest_field(
-    attr_to_rest_field: typing.Dict[str, "_RestField"], rest_name: str
-) -> typing.Optional["_RestField"]:
+def _get_rest_field(attr_to_rest_field: dict[str, "_RestField"], rest_name: str) -> typing.Optional["_RestField"]:
     try:
         return next(rf for rf in attr_to_rest_field.values() if rf._rest_name == rest_name)
     except StopIteration:
@@ -538,7 +586,7 @@ class Model(_MyMutableMapping):
     _is_model = True
     # label whether current class's _attr_to_rest_field has been calculated
     # could not see _attr_to_rest_field directly because subclass inherits it from parent class
-    _calculated: typing.Set[str] = set()
+    _calculated: set[str] = set()
 
     def __init__(self, *args: typing.Any, **kwargs: typing.Any) -> None:
         class_name = self.__class__.__name__
@@ -623,7 +671,7 @@ def __new__(cls, *args: typing.Any, **kwargs: typing.Any) -> Self:
             # we know the last nine classes in mro are going to be 'Model', '_MyMutableMapping', 'MutableMapping',
             # 'Mapping', 'Collection', 'Sized', 'Iterable', 'Container' and 'object'
             mros = cls.__mro__[:-9][::-1]  # ignore parents, and reverse the mro order
-            attr_to_rest_field: typing.Dict[str, _RestField] = {  # map attribute name to rest_field property
+            attr_to_rest_field: dict[str, _RestField] = {  # map attribute name to rest_field property
                 k: v for mro_class in mros for k, v in mro_class.__dict__.items() if k[0] != "_" and hasattr(v, "_type")
             }
             annotations = {
@@ -638,7 +686,7 @@ def __new__(cls, *args: typing.Any, **kwargs: typing.Any) -> Self:
                     rf._type = rf._get_deserialize_callable_from_annotation(annotations.get(attr, None))
                 if not rf._rest_name_input:
                     rf._rest_name_input = attr
-            cls._attr_to_rest_field: typing.Dict[str, _RestField] = dict(attr_to_rest_field.items())
+            cls._attr_to_rest_field: dict[str, _RestField] = dict(attr_to_rest_field.items())
             cls._calculated.add(f"{cls.__module__}.{cls.__qualname__}")
 
         return super().__new__(cls)
@@ -680,7 +728,7 @@ def _deserialize(cls, data, exist_discriminators):
         mapped_cls = cls.__mapping__.get(discriminator_value, cls)  # pyright: ignore # pylint: disable=no-member
         return mapped_cls._deserialize(data, exist_discriminators)
 
-    def as_dict(self, *, exclude_readonly: bool = False) -> typing.Dict[str, typing.Any]:
+    def as_dict(self, *, exclude_readonly: bool = False) -> dict[str, typing.Any]:
         """Return a dict that can be turned into json using json.dump.
 
         :keyword bool exclude_readonly: Whether to remove the readonly properties.
@@ -740,7 +788,7 @@ def _deserialize_with_union(deserializers, obj):
 def _deserialize_dict(
     value_deserializer: typing.Optional[typing.Callable],
     module: typing.Optional[str],
-    obj: typing.Dict[typing.Any, typing.Any],
+    obj: dict[typing.Any, typing.Any],
 ):
     if obj is None:
         return obj
@@ -750,7 +798,7 @@ def _deserialize_dict(
 
 
 def _deserialize_multiple_sequence(
-    entry_deserializers: typing.List[typing.Optional[typing.Callable]],
+    entry_deserializers: list[typing.Optional[typing.Callable]],
     module: typing.Optional[str],
     obj,
 ):
@@ -768,17 +816,28 @@ def _deserialize_sequence(
         return obj
     if isinstance(obj, ET.Element):
         obj = list(obj)
+    try:
+        if (
+            isinstance(obj, str)
+            and isinstance(deserializer, functools.partial)
+            and isinstance(deserializer.args[0], functools.partial)
+            and deserializer.args[0].func == _deserialize_array_encoded  # pylint: disable=comparison-with-callable
+        ):
+            # encoded string may be deserialized to sequence
+            return deserializer(obj)
+    except:  # pylint: disable=bare-except
+        pass
     return type(obj)(_deserialize(deserializer, entry, module) for entry in obj)
 
 
-def _sorted_annotations(types: typing.List[typing.Any]) -> typing.List[typing.Any]:
+def _sorted_annotations(types: list[typing.Any]) -> list[typing.Any]:
     return sorted(
         types,
         key=lambda x: hasattr(x, "__name__") and x.__name__.lower() in ("str", "float", "int", "bool"),
     )
 
 
-def _get_deserialize_callable_from_annotation(  # pylint: disable=too-many-return-statements, too-many-branches
+def _get_deserialize_callable_from_annotation(  # pylint: disable=too-many-return-statements, too-many-statements, too-many-branches
     annotation: typing.Any,
     module: typing.Optional[str],
     rf: typing.Optional["_RestField"] = None,
@@ -843,7 +902,10 @@ def _get_deserialize_callable_from_annotation(  # pylint: disable=too-many-retur
         return functools.partial(_deserialize_with_union, deserializers)
 
     try:
-        if annotation._name == "Dict":  # pyright: ignore
+        annotation_name = (
+            annotation.__name__ if hasattr(annotation, "__name__") else annotation._name  # pyright: ignore
+        )
+        if annotation_name.lower() == "dict":
             value_deserializer = _get_deserialize_callable_from_annotation(
                 annotation.__args__[1], module, rf  # pyright: ignore
             )
@@ -856,7 +918,10 @@ def _get_deserialize_callable_from_annotation(  # pylint: disable=too-many-retur
     except (AttributeError, IndexError):
         pass
     try:
-        if annotation._name in ["List", "Set", "Tuple", "Sequence"]:  # pyright: ignore
+        annotation_name = (
+            annotation.__name__ if hasattr(annotation, "__name__") else annotation._name  # pyright: ignore
+        )
+        if annotation_name.lower() in ["list", "set", "tuple", "sequence"]:
             if len(annotation.__args__) > 1:  # pyright: ignore
                 entry_deserializers = [
                     _get_deserialize_callable_from_annotation(dt, module, rf)
@@ -940,13 +1005,13 @@ def _deserialize(
 
 def _failsafe_deserialize(
     deserializer: typing.Any,
-    value: typing.Any,
+    response: HttpResponse,
     module: typing.Optional[str] = None,
     rf: typing.Optional["_RestField"] = None,
     format: typing.Optional[str] = None,
 ) -> typing.Any:
     try:
-        return _deserialize(deserializer, value, module, rf, format)
+        return _deserialize(deserializer, response.json(), module, rf, format)
     except DeserializationError:
         _LOGGER.warning(
             "Ran into a deserialization error. Ignoring since this is failsafe deserialization", exc_info=True
@@ -956,10 +1021,10 @@ def _failsafe_deserialize(
 
 def _failsafe_deserialize_xml(
     deserializer: typing.Any,
-    value: typing.Any,
+    response: HttpResponse,
 ) -> typing.Any:
     try:
-        return _deserialize_xml(deserializer, value)
+        return _deserialize_xml(deserializer, response.text())
     except DeserializationError:
         _LOGGER.warning(
             "Ran into a deserialization error. Ignoring since this is failsafe deserialization", exc_info=True
@@ -974,11 +1039,11 @@ def __init__(
         name: typing.Optional[str] = None,
         type: typing.Optional[typing.Callable] = None,  # pylint: disable=redefined-builtin
         is_discriminator: bool = False,
-        visibility: typing.Optional[typing.List[str]] = None,
+        visibility: typing.Optional[list[str]] = None,
         default: typing.Any = _UNSET,
         format: typing.Optional[str] = None,
         is_multipart_file_input: bool = False,
-        xml: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        xml: typing.Optional[dict[str, typing.Any]] = None,
     ):
         self._type = type
         self._rest_name_input = name
@@ -993,7 +1058,11 @@ def __init__(
 
     @property
     def _class_type(self) -> typing.Any:
-        return getattr(self._type, "args", [None])[0]
+        result = getattr(self._type, "args", [None])[0]
+        # type may be wrapped by nested functools.partial so we need to check for that
+        if isinstance(result, functools.partial):
+            return getattr(result, "args", [None])[0]
+        return result
 
     @property
     def _rest_name(self) -> str:
@@ -1004,14 +1073,37 @@ def _rest_name(self) -> str:
     def __get__(self, obj: Model, type=None):  # pylint: disable=redefined-builtin
         # by this point, type and rest_name will have a value bc we default
         # them in __new__ of the Model class
-        item = obj.get(self._rest_name)
+        # Use _data.get() directly to avoid triggering __getitem__ which clears the cache
+        item = obj._data.get(self._rest_name)
         if item is None:
             return item
         if self._is_model:
             return item
-        return _deserialize(self._type, _serialize(item, self._format), rf=self)
+
+        # For mutable types, we want mutations to directly affect _data
+        # Check if we've already deserialized this value
+        cache_attr = f"_deserialized_{self._rest_name}"
+        if hasattr(obj, cache_attr):
+            # Return the value from _data directly (it's been deserialized in place)
+            return obj._data.get(self._rest_name)
+
+        deserialized = _deserialize(self._type, _serialize(item, self._format), rf=self)
+
+        # For mutable types, store the deserialized value back in _data
+        # so mutations directly affect _data
+        if isinstance(deserialized, (dict, list, set)):
+            obj._data[self._rest_name] = deserialized
+            object.__setattr__(obj, cache_attr, True)  # Mark as deserialized
+            return deserialized
+
+        return deserialized
 
     def __set__(self, obj: Model, value) -> None:
+        # Clear the cached deserialized object when setting a new value
+        cache_attr = f"_deserialized_{self._rest_name}"
+        if hasattr(obj, cache_attr):
+            object.__delattr__(obj, cache_attr)
+
         if value is None:
             # we want to wipe out entries if users set attr to None
             try:
@@ -1036,11 +1128,11 @@ def rest_field(
     *,
     name: typing.Optional[str] = None,
     type: typing.Optional[typing.Callable] = None,  # pylint: disable=redefined-builtin
-    visibility: typing.Optional[typing.List[str]] = None,
+    visibility: typing.Optional[list[str]] = None,
     default: typing.Any = _UNSET,
     format: typing.Optional[str] = None,
     is_multipart_file_input: bool = False,
-    xml: typing.Optional[typing.Dict[str, typing.Any]] = None,
+    xml: typing.Optional[dict[str, typing.Any]] = None,
 ) -> typing.Any:
     return _RestField(
         name=name,
@@ -1057,8 +1149,8 @@ def rest_discriminator(
     *,
     name: typing.Optional[str] = None,
     type: typing.Optional[typing.Callable] = None,  # pylint: disable=redefined-builtin
-    visibility: typing.Optional[typing.List[str]] = None,
-    xml: typing.Optional[typing.Dict[str, typing.Any]] = None,
+    visibility: typing.Optional[list[str]] = None,
+    xml: typing.Optional[dict[str, typing.Any]] = None,
 ) -> typing.Any:
     return _RestField(name=name, type=type, is_discriminator=True, visibility=visibility, xml=xml)
 
@@ -1077,9 +1169,9 @@ def serialize_xml(model: Model, exclude_readonly: bool = False) -> str:
 def _get_element(
     o: typing.Any,
     exclude_readonly: bool = False,
-    parent_meta: typing.Optional[typing.Dict[str, typing.Any]] = None,
+    parent_meta: typing.Optional[dict[str, typing.Any]] = None,
     wrapped_element: typing.Optional[ET.Element] = None,
-) -> typing.Union[ET.Element, typing.List[ET.Element]]:
+) -> typing.Union[ET.Element, list[ET.Element]]:
     if _is_model(o):
         model_meta = getattr(o, "_xml", {})
 
@@ -1168,7 +1260,7 @@ def _get_element(
 def _get_wrapped_element(
     v: typing.Any,
     exclude_readonly: bool,
-    meta: typing.Optional[typing.Dict[str, typing.Any]],
+    meta: typing.Optional[dict[str, typing.Any]],
 ) -> ET.Element:
     wrapped_element = _create_xml_element(
         meta.get("name") if meta else None, meta.get("prefix") if meta else None, meta.get("ns") if meta else None
@@ -1211,7 +1303,7 @@ def _deserialize_xml(
 def _convert_element(e: ET.Element):
     # dict case
     if len(e.attrib) > 0 or len({child.tag for child in e}) > 1:
-        dict_result: typing.Dict[str, typing.Any] = {}
+        dict_result: dict[str, typing.Any] = {}
         for child in e:
             if dict_result.get(child.tag) is not None:
                 if isinstance(dict_result[child.tag], list):
@@ -1224,7 +1316,7 @@ def _convert_element(e: ET.Element):
         return dict_result
     # array case
     if len(e) > 0:
-        array_result: typing.List[typing.Any] = []
+        array_result: list[typing.Any] = []
         for child in e:
             array_result.append(_convert_element(child))
         return array_result
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/serialization.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/serialization.py
index eb86ea23c965..81ec1de5922b 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/serialization.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_utils/serialization.py
@@ -21,7 +21,6 @@
 import sys
 import codecs
 from typing import (
-    Dict,
     Any,
     cast,
     Optional,
@@ -31,7 +30,6 @@
     Mapping,
     Callable,
     MutableMapping,
-    List,
 )
 
 try:
@@ -229,12 +227,12 @@ class Model:
     serialization and deserialization.
     """
 
-    _subtype_map: Dict[str, Dict[str, Any]] = {}
-    _attribute_map: Dict[str, Dict[str, Any]] = {}
-    _validation: Dict[str, Dict[str, Any]] = {}
+    _subtype_map: dict[str, dict[str, Any]] = {}
+    _attribute_map: dict[str, dict[str, Any]] = {}
+    _validation: dict[str, dict[str, Any]] = {}
 
     def __init__(self, **kwargs: Any) -> None:
-        self.additional_properties: Optional[Dict[str, Any]] = {}
+        self.additional_properties: Optional[dict[str, Any]] = {}
         for k in kwargs:  # pylint: disable=consider-using-dict-items
             if k not in self._attribute_map:
                 _LOGGER.warning("%s is not a known attribute of class %s and will be ignored", k, self.__class__)
@@ -311,7 +309,7 @@ def serialize(self, keep_readonly: bool = False, **kwargs: Any) -> JSON:
     def as_dict(
         self,
         keep_readonly: bool = True,
-        key_transformer: Callable[[str, Dict[str, Any], Any], Any] = attribute_transformer,
+        key_transformer: Callable[[str, dict[str, Any], Any], Any] = attribute_transformer,
         **kwargs: Any
     ) -> JSON:
         """Return a dict that can be serialized using json.dump.
@@ -380,7 +378,7 @@ def deserialize(cls, data: Any, content_type: Optional[str] = None) -> Self:
     def from_dict(
         cls,
         data: Any,
-        key_extractors: Optional[Callable[[str, Dict[str, Any], Any], Any]] = None,
+        key_extractors: Optional[Callable[[str, dict[str, Any], Any], Any]] = None,
         content_type: Optional[str] = None,
     ) -> Self:
         """Parse a dict using given key extractor return a model.
@@ -414,7 +412,7 @@ def _flatten_subtype(cls, key, objects):
             return {}
         result = dict(cls._subtype_map[key])
         for valuetype in cls._subtype_map[key].values():
-            result.update(objects[valuetype]._flatten_subtype(key, objects))  # pylint: disable=protected-access
+            result |= objects[valuetype]._flatten_subtype(key, objects)  # pylint: disable=protected-access
         return result
 
     @classmethod
@@ -528,7 +526,7 @@ def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
             "[]": self.serialize_iter,
             "{}": self.serialize_dict,
         }
-        self.dependencies: Dict[str, type] = dict(classes) if classes else {}
+        self.dependencies: dict[str, type] = dict(classes) if classes else {}
         self.key_transformer = full_restapi_key_transformer
         self.client_side_validation = True
 
@@ -579,7 +577,7 @@ def _serialize(  # pylint: disable=too-many-nested-blocks, too-many-branches, to
 
                 if attr_name == "additional_properties" and attr_desc["key"] == "":
                     if target_obj.additional_properties is not None:
-                        serialized.update(target_obj.additional_properties)
+                        serialized |= target_obj.additional_properties
                     continue
                 try:
 
@@ -789,7 +787,7 @@ def serialize_data(self, data, data_type, **kwargs):
 
             # If dependencies is empty, try with current data class
             # It has to be a subclass of Enum anyway
-            enum_type = self.dependencies.get(data_type, data.__class__)
+            enum_type = self.dependencies.get(data_type, cast(type, data.__class__))
             if issubclass(enum_type, Enum):
                 return Serializer.serialize_enum(data, enum_obj=enum_type)
 
@@ -823,13 +821,20 @@ def serialize_basic(cls, data, data_type, **kwargs):
         :param str data_type: Type of object in the iterable.
         :rtype: str, int, float, bool
         :return: serialized object
+        :raises TypeError: raise if data_type is not one of str, int, float, bool.
         """
         custom_serializer = cls._get_custom_serializers(data_type, **kwargs)
         if custom_serializer:
             return custom_serializer(data)
         if data_type == "str":
             return cls.serialize_unicode(data)
-        return eval(data_type)(data)  # nosec # pylint: disable=eval-used
+        if data_type == "int":
+            return int(data)
+        if data_type == "float":
+            return float(data)
+        if data_type == "bool":
+            return bool(data)
+        raise TypeError("Unknown basic data type: {}".format(data_type))
 
     @classmethod
     def serialize_unicode(cls, data):
@@ -1184,7 +1189,7 @@ def rest_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argumen
 
     while "." in key:
         # Need the cast, as for some reasons "split" is typed as list[str | Any]
-        dict_keys = cast(List[str], _FLATTEN.split(key))
+        dict_keys = cast(list[str], _FLATTEN.split(key))
         if len(dict_keys) == 1:
             key = _decode_attribute_map_key(dict_keys[0])
             break
@@ -1386,7 +1391,7 @@ def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
             "duration": (isodate.Duration, datetime.timedelta),
             "iso-8601": (datetime.datetime),
         }
-        self.dependencies: Dict[str, type] = dict(classes) if classes else {}
+        self.dependencies: dict[str, type] = dict(classes) if classes else {}
         self.key_extractors = [rest_key_extractor, xml_key_extractor]
         # Additional properties only works if the "rest_key_extractor" is used to
         # extract the keys. Making it to work whatever the key extractor is too much
@@ -1759,7 +1764,7 @@ def deserialize_basic(self, attr, data_type):  # pylint: disable=too-many-return
         :param str data_type: deserialization data type.
         :return: Deserialized basic type.
         :rtype: str, int, float or bool
-        :raises TypeError: if string format is not valid.
+        :raises TypeError: if string format is not valid or data_type is not one of str, int, float, bool.
         """
         # If we're here, data is supposed to be a basic type.
         # If it's still an XML node, take the text
@@ -1785,7 +1790,11 @@ def deserialize_basic(self, attr, data_type):  # pylint: disable=too-many-return
 
         if data_type == "str":
             return self.deserialize_unicode(attr)
-        return eval(data_type)(attr)  # nosec # pylint: disable=eval-used
+        if data_type == "int":
+            return int(attr)
+        if data_type == "float":
+            return float(attr)
+        raise TypeError("Unknown basic data type: {}".format(data_type))
 
     @staticmethod
     def deserialize_unicode(data):
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_version.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_version.py
index be71c81bd282..0ec13ea52bbf 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_version.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/_version.py
@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "1.0.0b1"
+VERSION = "1.0.0"
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_client.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_client.py
index eb0c878457a9..e0af1fede7f3 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_client.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_client.py
@@ -22,6 +22,7 @@
 from .operations import FileSystemsOperations, Operations
 
 if TYPE_CHECKING:
+    from azure.core import AzureClouds
     from azure.core.credentials_async import AsyncTokenCredential
 
 
@@ -38,19 +39,27 @@ class DellStorageMgmtClient:
     :type subscription_id: str
     :param base_url: Service host. Default value is None.
     :type base_url: str
-    :keyword api_version: The API version to use for this operation. Default value is
-     "2025-03-21-preview". Note that overriding this default value may result in unsupported
-     behavior.
+    :keyword cloud_setting: The cloud setting for which to get the ARM endpoint. Default value is
+     None.
+    :paramtype cloud_setting: ~azure.core.AzureClouds
+    :keyword api_version: The API version to use for this operation. Default value is "2025-03-21".
+     Note that overriding this default value may result in unsupported behavior.
     :paramtype api_version: str
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no
      Retry-After header is present.
     """
 
     def __init__(
-        self, credential: "AsyncTokenCredential", subscription_id: str, base_url: Optional[str] = None, **kwargs: Any
+        self,
+        credential: "AsyncTokenCredential",
+        subscription_id: str,
+        base_url: Optional[str] = None,
+        *,
+        cloud_setting: Optional["AzureClouds"] = None,
+        **kwargs: Any
     ) -> None:
         _endpoint = "{endpoint}"
-        _cloud = kwargs.pop("cloud_setting", None) or settings.current.azure_cloud  # type: ignore
+        _cloud = cloud_setting or settings.current.azure_cloud  # type: ignore
         _endpoints = get_arm_endpoints(_cloud)
         if not base_url:
             base_url = _endpoints["resource_manager"]
@@ -59,6 +68,7 @@ def __init__(
             credential=credential,
             subscription_id=subscription_id,
             base_url=cast(str, base_url),
+            cloud_setting=cloud_setting,
             credential_scopes=credential_scopes,
             **kwargs
         )
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_configuration.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_configuration.py
index 27d587e97735..ee8206312590 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_configuration.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_configuration.py
@@ -6,7 +6,7 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-from typing import Any, TYPE_CHECKING
+from typing import Any, Optional, TYPE_CHECKING
 
 from azure.core.pipeline import policies
 from azure.mgmt.core.policies import ARMHttpLoggingPolicy, AsyncARMChallengeAuthenticationPolicy
@@ -14,6 +14,7 @@
 from .._version import VERSION
 
 if TYPE_CHECKING:
+    from azure.core import AzureClouds
     from azure.core.credentials_async import AsyncTokenCredential
 
 
@@ -29,9 +30,11 @@ class DellStorageMgmtClientConfiguration:  # pylint: disable=too-many-instance-a
     :type subscription_id: str
     :param base_url: Service host. Default value is "https://management.azure.com".
     :type base_url: str
-    :keyword api_version: The API version to use for this operation. Default value is
-     "2025-03-21-preview". Note that overriding this default value may result in unsupported
-     behavior.
+    :param cloud_setting: The cloud setting for which to get the ARM endpoint. Default value is
+     None.
+    :type cloud_setting: ~azure.core.AzureClouds
+    :keyword api_version: The API version to use for this operation. Default value is "2025-03-21".
+     Note that overriding this default value may result in unsupported behavior.
     :paramtype api_version: str
     """
 
@@ -40,9 +43,10 @@ def __init__(
         credential: "AsyncTokenCredential",
         subscription_id: str,
         base_url: str = "https://management.azure.com",
+        cloud_setting: Optional["AzureClouds"] = None,
         **kwargs: Any
     ) -> None:
-        api_version: str = kwargs.pop("api_version", "2025-03-21-preview")
+        api_version: str = kwargs.pop("api_version", "2025-03-21")
 
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
@@ -52,6 +56,7 @@ def __init__(
         self.credential = credential
         self.subscription_id = subscription_id
         self.base_url = base_url
+        self.cloud_setting = cloud_setting
         self.api_version = api_version
         self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
         kwargs.setdefault("sdk_moniker", "mgmt-dellstorage/{}".format(VERSION))
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_patch.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_patch.py
index 8bcb627aa475..87676c65a8f0 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_patch.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/_patch.py
@@ -7,9 +7,9 @@
 
 Follow our quickstart for examples: https://aka.ms/azsdk/python/dpcodegen/python/customize
 """
-from typing import List
 
-__all__: List[str] = []  # Add all objects you want publicly available to users at this package level
+
+__all__: list[str] = []  # Add all objects you want publicly available to users at this package level
 
 
 def patch_sdk():
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_operations.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_operations.py
index c0351581214e..dadad94b9698 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_operations.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_operations.py
@@ -8,7 +8,7 @@
 from collections.abc import MutableMapping
 from io import IOBase
 import json
-from typing import Any, AsyncIterable, AsyncIterator, Callable, Dict, IO, List, Optional, TypeVar, Union, cast, overload
+from typing import Any, AsyncIterator, Callable, IO, Optional, TypeVar, Union, cast, overload
 import urllib.parse
 
 from azure.core import AsyncPipelineClient
@@ -47,8 +47,9 @@
 from .._configuration import DellStorageMgmtClientConfiguration
 
 T = TypeVar("T")
-ClsType = Optional[Callable[[PipelineResponse[HttpRequest, AsyncHttpResponse], T, Dict[str, Any]], Any]]
+ClsType = Optional[Callable[[PipelineResponse[HttpRequest, AsyncHttpResponse], T, dict[str, Any]], Any]]
 JSON = MutableMapping[str, Any]
+List = list
 
 
 class Operations:
@@ -69,7 +70,7 @@ def __init__(self, *args, **kwargs) -> None:
         self._deserialize: Deserializer = input_args.pop(0) if input_args else kwargs.pop("deserializer")
 
     @distributed_trace
-    def list(self, **kwargs: Any) -> AsyncIterable["_models.Operation"]:
+    def list(self, **kwargs: Any) -> AsyncItemPaged["_models.Operation"]:
         """List the operations for the provider.
 
         :return: An iterator like instance of Operation
@@ -144,7 +145,10 @@ async def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
@@ -222,7 +226,10 @@ async def get(self, resource_group_name: str, filesystem_name: str, **kwargs: An
                 except (StreamConsumedError, StreamClosedError):
                     pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         if _stream:
@@ -291,7 +298,10 @@ async def _create_or_update_initial(
             except (StreamConsumedError, StreamClosedError):
                 pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -620,7 +630,10 @@ async def update(
                 except (StreamConsumedError, StreamClosedError):
                     pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         if _stream:
@@ -675,7 +688,10 @@ async def _delete_initial(
             except (StreamConsumedError, StreamClosedError):
                 pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -750,7 +766,7 @@ def get_long_running_output(pipeline_response):  # pylint: disable=inconsistent-
     @distributed_trace
     def list_by_resource_group(
         self, resource_group_name: str, **kwargs: Any
-    ) -> AsyncIterable["_models.FileSystemResource"]:
+    ) -> AsyncItemPaged["_models.FileSystemResource"]:
         """List FileSystemResource resources by resource group.
 
         :param resource_group_name: The name of the resource group. The name is case insensitive.
@@ -831,7 +847,10 @@ async def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
@@ -839,7 +858,7 @@ async def get_next(next_link=None):
         return AsyncItemPaged(get_next, extract_data)
 
     @distributed_trace
-    def list_by_subscription(self, **kwargs: Any) -> AsyncIterable["_models.FileSystemResource"]:
+    def list_by_subscription(self, **kwargs: Any) -> AsyncItemPaged["_models.FileSystemResource"]:
         """List FileSystemResource resources by subscription ID.
 
         :return: An iterator like instance of FileSystemResource
@@ -916,7 +935,10 @@ async def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_patch.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_patch.py
index 8bcb627aa475..87676c65a8f0 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_patch.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/aio/operations/_patch.py
@@ -7,9 +7,9 @@
 
 Follow our quickstart for examples: https://aka.ms/azsdk/python/dpcodegen/python/customize
 """
-from typing import List
 
-__all__: List[str] = []  # Add all objects you want publicly available to users at this package level
+
+__all__: list[str] = []  # Add all objects you want publicly available to users at this package level
 
 
 def patch_sdk():
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_models.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_models.py
index e7b88f16ab3e..db1fa2d6575f 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_models.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_models.py
@@ -9,7 +9,7 @@
 # pylint: disable=useless-super-delegation
 
 import datetime
-from typing import Any, Dict, List, Mapping, Optional, TYPE_CHECKING, Union, overload
+from typing import Any, Mapping, Optional, TYPE_CHECKING, Union, overload
 
 from .._utils.model_base import Model as _Model, rest_field
 
@@ -274,17 +274,16 @@ class ErrorDetail(_Model):
     """The error message."""
     target: Optional[str] = rest_field(visibility=["read"])
     """The error target."""
-    details: Optional[List["_models.ErrorDetail"]] = rest_field(visibility=["read"])
+    details: Optional[list["_models.ErrorDetail"]] = rest_field(visibility=["read"])
     """The error details."""
-    additional_info: Optional[List["_models.ErrorAdditionalInfo"]] = rest_field(
+    additional_info: Optional[list["_models.ErrorAdditionalInfo"]] = rest_field(
         name="additionalInfo", visibility=["read"]
     )
     """The error additional info."""
 
 
 class ErrorResponse(_Model):
-    """Common error response for all Azure Resource Manager APIs to return error details for failed
-    operations.
+    """Error response.
 
     :ivar error: The error object.
     :vartype error: ~azure.mgmt.dellstorage.models.ErrorDetail
@@ -312,7 +311,7 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:
 
 
 class Resource(_Model):
-    """Common fields that are returned in the response for all Azure Resource Manager resources.
+    """Resource.
 
     :ivar id: Fully qualified resource ID for the resource. Ex -
      /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}.
@@ -340,8 +339,7 @@ class Resource(_Model):
 
 
 class TrackedResource(Resource):
-    """The resource model definition for an Azure Resource Manager tracked top level resource which
-    has 'tags' and a 'location'.
+    """Tracked Resource.
 
     :ivar id: Fully qualified resource ID for the resource. Ex -
      /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}.
@@ -360,7 +358,7 @@ class TrackedResource(Resource):
     :vartype location: str
     """
 
-    tags: Optional[Dict[str, str]] = rest_field(visibility=["read", "create", "update", "delete", "query"])
+    tags: Optional[dict[str, str]] = rest_field(visibility=["read", "create", "update", "delete", "query"])
     """Resource tags."""
     location: str = rest_field(visibility=["read", "create"])
     """The geo-location where the resource lives. Required."""
@@ -370,7 +368,7 @@ def __init__(
         self,
         *,
         location: str,
-        tags: Optional[Dict[str, str]] = None,
+        tags: Optional[dict[str, str]] = None,
     ) -> None: ...
 
     @overload
@@ -423,7 +421,7 @@ def __init__(
         self,
         *,
         location: str,
-        tags: Optional[Dict[str, str]] = None,
+        tags: Optional[dict[str, str]] = None,
         properties: Optional["_models.FileSystemResourceProperties"] = None,
         identity: Optional["_models.ManagedServiceIdentity"] = None,
     ) -> None: ...
@@ -546,7 +544,7 @@ class FileSystemResourceUpdate(_Model):
         visibility=["read", "create", "update", "delete", "query"]
     )
     """The managed service identities assigned to this resource."""
-    tags: Optional[Dict[str, str]] = rest_field(visibility=["read", "create", "update", "delete", "query"])
+    tags: Optional[dict[str, str]] = rest_field(visibility=["read", "create", "update", "delete", "query"])
     """Resource tags."""
     properties: Optional["_models.FileSystemResourceUpdateProperties"] = rest_field(
         visibility=["read", "create", "update", "delete", "query"]
@@ -558,7 +556,7 @@ def __init__(
         self,
         *,
         identity: Optional["_models.ManagedServiceIdentityUpdate"] = None,
-        tags: Optional[Dict[str, str]] = None,
+        tags: Optional[dict[str, str]] = None,
         properties: Optional["_models.FileSystemResourceUpdateProperties"] = None,
     ) -> None: ...
 
@@ -643,7 +641,7 @@ class ManagedServiceIdentity(_Model):
     )
     """The type of managed identity assigned to this resource. Required. Known values are: \"None\",
      \"SystemAssigned\", \"UserAssigned\", and \"SystemAssigned,UserAssigned\"."""
-    user_assigned_identities: Optional[Dict[str, "_models.UserAssignedIdentity"]] = rest_field(
+    user_assigned_identities: Optional[dict[str, "_models.UserAssignedIdentity"]] = rest_field(
         name="userAssignedIdentities", visibility=["read", "create", "update", "delete", "query"]
     )
     """The identities assigned to this resource by the user."""
@@ -653,7 +651,7 @@ def __init__(
         self,
         *,
         type: Union[str, "_models.ManagedServiceIdentityType"],
-        user_assigned_identities: Optional[Dict[str, "_models.UserAssignedIdentity"]] = None,
+        user_assigned_identities: Optional[dict[str, "_models.UserAssignedIdentity"]] = None,
     ) -> None: ...
 
     @overload
@@ -683,7 +681,7 @@ class ManagedServiceIdentityUpdate(_Model):
     )
     """The type of managed identity assigned to this resource. Known values are: \"None\",
      \"SystemAssigned\", \"UserAssigned\", and \"SystemAssigned,UserAssigned\"."""
-    user_assigned_identities: Optional[Dict[str, "_models.UserAssignedIdentity"]] = rest_field(
+    user_assigned_identities: Optional[dict[str, "_models.UserAssignedIdentity"]] = rest_field(
         name="userAssignedIdentities", visibility=["read", "create", "update", "delete", "query"]
     )
     """The identities assigned to this resource by the user."""
@@ -693,7 +691,7 @@ def __init__(
         self,
         *,
         type: Optional[Union[str, "_models.ManagedServiceIdentityType"]] = None,
-        user_assigned_identities: Optional[Dict[str, "_models.UserAssignedIdentity"]] = None,
+        user_assigned_identities: Optional[dict[str, "_models.UserAssignedIdentity"]] = None,
     ) -> None: ...
 
     @overload
@@ -786,7 +784,7 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:
 
 
 class Operation(_Model):
-    """Details of a REST API operation, returned from the Resource Provider Operations API.
+    """REST API Operation.
 
     :ivar name: The name of the operation, as per Resource-Based Access Control (RBAC). Examples:
      "Microsoft.Compute/virtualMachines/write", "Microsoft.Compute/virtualMachines/capture/action".
@@ -943,16 +941,16 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:
 class UserAssignedIdentity(_Model):
     """User assigned identity properties.
 
-    :ivar client_id: The client ID of the assigned identity.
-    :vartype client_id: str
     :ivar principal_id: The principal ID of the assigned identity.
     :vartype principal_id: str
+    :ivar client_id: The client ID of the assigned identity.
+    :vartype client_id: str
     """
 
-    client_id: Optional[str] = rest_field(name="clientId", visibility=["read"])
-    """The client ID of the assigned identity."""
     principal_id: Optional[str] = rest_field(name="principalId", visibility=["read"])
     """The principal ID of the assigned identity."""
+    client_id: Optional[str] = rest_field(name="clientId", visibility=["read"])
+    """The client ID of the assigned identity."""
 
 
 class UserDetails(_Model):
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_patch.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_patch.py
index 8bcb627aa475..87676c65a8f0 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_patch.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/models/_patch.py
@@ -7,9 +7,9 @@
 
 Follow our quickstart for examples: https://aka.ms/azsdk/python/dpcodegen/python/customize
 """
-from typing import List
 
-__all__: List[str] = []  # Add all objects you want publicly available to users at this package level
+
+__all__: list[str] = []  # Add all objects you want publicly available to users at this package level
 
 
 def patch_sdk():
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_operations.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_operations.py
index eb5be3c60dc8..8bd4945384a4 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_operations.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_operations.py
@@ -9,7 +9,7 @@
 from collections.abc import MutableMapping
 from io import IOBase
 import json
-from typing import Any, Callable, Dict, IO, Iterable, Iterator, List, Optional, TypeVar, Union, cast, overload
+from typing import Any, Callable, IO, Iterator, Optional, TypeVar, Union, cast, overload
 import urllib.parse
 
 from azure.core import PipelineClient
@@ -38,8 +38,9 @@
 from .._utils.serialization import Deserializer, Serializer
 
 T = TypeVar("T")
-ClsType = Optional[Callable[[PipelineResponse[HttpRequest, HttpResponse], T, Dict[str, Any]], Any]]
+ClsType = Optional[Callable[[PipelineResponse[HttpRequest, HttpResponse], T, dict[str, Any]], Any]]
 JSON = MutableMapping[str, Any]
+List = list
 
 _SERIALIZER = Serializer()
 _SERIALIZER.client_side_validation = False
@@ -49,7 +50,7 @@ def build_operations_list_request(**kwargs: Any) -> HttpRequest:
     _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -70,7 +71,7 @@ def build_file_systems_get_request(
     _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -99,7 +100,7 @@ def build_file_systems_create_or_update_request(  # pylint: disable=name-too-lon
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
     content_type: Optional[str] = kwargs.pop("content_type", _headers.pop("Content-Type", None))
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -130,7 +131,7 @@ def build_file_systems_update_request(
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
     content_type: Optional[str] = kwargs.pop("content_type", _headers.pop("Content-Type", None))
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -157,12 +158,9 @@ def build_file_systems_update_request(
 def build_file_systems_delete_request(
     resource_group_name: str, filesystem_name: str, subscription_id: str, **kwargs: Any
 ) -> HttpRequest:
-    _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
-    accept = _headers.pop("Accept", "application/json")
-
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     # Construct URL
     _url = "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Dell.Storage/filesystems/{filesystemName}"
     path_format_arguments = {
@@ -176,10 +174,7 @@ def build_file_systems_delete_request(
     # Construct parameters
     _params["api-version"] = _SERIALIZER.query("api_version", api_version, "str")
 
-    # Construct headers
-    _headers["Accept"] = _SERIALIZER.header("accept", accept, "str")
-
-    return HttpRequest(method="DELETE", url=_url, params=_params, headers=_headers, **kwargs)
+    return HttpRequest(method="DELETE", url=_url, params=_params, **kwargs)
 
 
 def build_file_systems_list_by_resource_group_request(  # pylint: disable=name-too-long
@@ -188,7 +183,7 @@ def build_file_systems_list_by_resource_group_request(  # pylint: disable=name-t
     _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -215,7 +210,7 @@ def build_file_systems_list_by_subscription_request(  # pylint: disable=name-too
     _headers = case_insensitive_dict(kwargs.pop("headers", {}) or {})
     _params = case_insensitive_dict(kwargs.pop("params", {}) or {})
 
-    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21-preview"))
+    api_version: str = kwargs.pop("api_version", _params.pop("api-version", "2025-03-21"))
     accept = _headers.pop("Accept", "application/json")
 
     # Construct URL
@@ -245,7 +240,7 @@ class Operations:
         :attr:`operations` attribute.
     """
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, *args, **kwargs) -> None:
         input_args = list(args)
         self._client: PipelineClient = input_args.pop(0) if input_args else kwargs.pop("client")
         self._config: DellStorageMgmtClientConfiguration = input_args.pop(0) if input_args else kwargs.pop("config")
@@ -253,7 +248,7 @@ def __init__(self, *args, **kwargs):
         self._deserialize: Deserializer = input_args.pop(0) if input_args else kwargs.pop("deserializer")
 
     @distributed_trace
-    def list(self, **kwargs: Any) -> Iterable["_models.Operation"]:
+    def list(self, **kwargs: Any) -> ItemPaged["_models.Operation"]:
         """List the operations for the provider.
 
         :return: An iterator like instance of Operation
@@ -328,7 +323,10 @@ def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
@@ -346,7 +344,7 @@ class FileSystemsOperations:
         :attr:`file_systems` attribute.
     """
 
-    def __init__(self, *args, **kwargs):
+    def __init__(self, *args, **kwargs) -> None:
         input_args = list(args)
         self._client: PipelineClient = input_args.pop(0) if input_args else kwargs.pop("client")
         self._config: DellStorageMgmtClientConfiguration = input_args.pop(0) if input_args else kwargs.pop("config")
@@ -406,7 +404,10 @@ def get(self, resource_group_name: str, filesystem_name: str, **kwargs: Any) ->
                 except (StreamConsumedError, StreamClosedError):
                     pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         if _stream:
@@ -475,7 +476,10 @@ def _create_or_update_initial(
             except (StreamConsumedError, StreamClosedError):
                 pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -804,7 +808,10 @@ def update(
                 except (StreamConsumedError, StreamClosedError):
                     pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         if _stream:
@@ -857,7 +864,10 @@ def _delete_initial(self, resource_group_name: str, filesystem_name: str, **kwar
             except (StreamConsumedError, StreamClosedError):
                 pass
             map_error(status_code=response.status_code, response=response, error_map=error_map)
-            error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+            error = _failsafe_deserialize(
+                _models.ErrorResponse,
+                response,
+            )
             raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
         response_headers = {}
@@ -930,7 +940,9 @@ def get_long_running_output(pipeline_response):  # pylint: disable=inconsistent-
         return LROPoller[None](self._client, raw_result, get_long_running_output, polling_method)  # type: ignore
 
     @distributed_trace
-    def list_by_resource_group(self, resource_group_name: str, **kwargs: Any) -> Iterable["_models.FileSystemResource"]:
+    def list_by_resource_group(
+        self, resource_group_name: str, **kwargs: Any
+    ) -> ItemPaged["_models.FileSystemResource"]:
         """List FileSystemResource resources by resource group.
 
         :param resource_group_name: The name of the resource group. The name is case insensitive.
@@ -1010,7 +1022,10 @@ def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
@@ -1018,7 +1033,7 @@ def get_next(next_link=None):
         return ItemPaged(get_next, extract_data)
 
     @distributed_trace
-    def list_by_subscription(self, **kwargs: Any) -> Iterable["_models.FileSystemResource"]:
+    def list_by_subscription(self, **kwargs: Any) -> ItemPaged["_models.FileSystemResource"]:
         """List FileSystemResource resources by subscription ID.
 
         :return: An iterator like instance of FileSystemResource
@@ -1094,7 +1109,10 @@ def get_next(next_link=None):
 
             if response.status_code not in [200]:
                 map_error(status_code=response.status_code, response=response, error_map=error_map)
-                error = _failsafe_deserialize(_models.ErrorResponse, response.json())
+                error = _failsafe_deserialize(
+                    _models.ErrorResponse,
+                    response,
+                )
                 raise HttpResponseError(response=response, model=error, error_format=ARMErrorFormat)
 
             return pipeline_response
diff --git a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_patch.py b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_patch.py
index 8bcb627aa475..87676c65a8f0 100644
--- a/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_patch.py
+++ b/sdk/dell/azure-mgmt-dellstorage/azure/mgmt/dellstorage/operations/_patch.py
@@ -7,9 +7,9 @@
 
 Follow our quickstart for examples: https://aka.ms/azsdk/python/dpcodegen/python/customize
 """
-from typing import List
 
-__all__: List[str] = []  # Add all objects you want publicly available to users at this package level
+
+__all__: list[str] = []  # Add all objects you want publicly available to users at this package level
 
 
 def patch_sdk():
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_maximum_set_gen.py
index 134bb72f36eb..747db3378e1d 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_maximum_set_gen.py
@@ -68,6 +68,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_CreateOrUpdate_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_CreateOrUpdate_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_minimum_set_gen.py
index 04e0b3221579..abbbd4900741 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_create_or_update_minimum_set_gen.py
@@ -53,6 +53,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_CreateOrUpdate_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_CreateOrUpdate_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_maximum_set_gen.py
index 488a29d45818..3ab61f7cf72f 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_maximum_set_gen.py
@@ -36,6 +36,6 @@ def main():
     ).result()
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Delete_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Delete_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_minimum_set_gen.py
index 30bb3233af42..a207834b5583 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_delete_minimum_set_gen.py
@@ -36,6 +36,6 @@ def main():
     ).result()
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Delete_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Delete_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_maximum_set_gen.py
index eb3b40bbe711..da4a5fb4f325 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_maximum_set_gen.py
@@ -37,6 +37,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Get_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Get_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_minimum_set_gen.py
index 3c2aebc413f9..bd9096ba07b5 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_get_minimum_set_gen.py
@@ -37,6 +37,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Get_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Get_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_maximum_set_gen.py
index a4f1e4d5d2ed..c42681730af3 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_maximum_set_gen.py
@@ -37,6 +37,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_ListByResourceGroup_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_ListByResourceGroup_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_minimum_set_gen.py
index a4a55e2f060c..69bf0a3ec3cb 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_resource_group_minimum_set_gen.py
@@ -37,6 +37,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_ListByResourceGroup_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_ListByResourceGroup_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_maximum_set_gen.py
index 4bcdae3ad3b4..a5f189a725f8 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_maximum_set_gen.py
@@ -35,6 +35,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_ListBySubscription_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_ListBySubscription_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_minimum_set_gen.py
index 731e941b60ae..d2153dad8d34 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_list_by_subscription_minimum_set_gen.py
@@ -35,6 +35,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_ListBySubscription_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_ListBySubscription_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_maximum_set_gen.py
index 369cfd8b6eb8..69f18e73cbe1 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_maximum_set_gen.py
@@ -54,6 +54,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Update_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Update_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_minimum_set_gen.py
index c049d1c768c7..4be60633511b 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/file_systems_update_minimum_set_gen.py
@@ -38,6 +38,6 @@ def main():
     print(response)
 
 
-# x-ms-original-file: 2025-03-21-preview/FileSystems_Update_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/FileSystems_Update_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_maximum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_maximum_set_gen.py
index 4a8c0b918155..27227f74fdb9 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_maximum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_maximum_set_gen.py
@@ -35,6 +35,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/Operations_List_MaximumSet_Gen.json
+# x-ms-original-file: 2025-03-21/Operations_List_MaximumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_minimum_set_gen.py b/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_minimum_set_gen.py
index 64fa658c5799..94e53e7bc562 100644
--- a/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_minimum_set_gen.py
+++ b/sdk/dell/azure-mgmt-dellstorage/generated_samples/operations_list_minimum_set_gen.py
@@ -35,6 +35,6 @@ def main():
         print(item)
 
 
-# x-ms-original-file: 2025-03-21-preview/Operations_List_MinimumSet_Gen.json
+# x-ms-original-file: 2025-03-21/Operations_List_MinimumSet_Gen.json
 if __name__ == "__main__":
     main()
diff --git a/sdk/dell/azure-mgmt-dellstorage/pyproject.toml b/sdk/dell/azure-mgmt-dellstorage/pyproject.toml
index 42a7f73e0386..aee6aa322b89 100644
--- a/sdk/dell/azure-mgmt-dellstorage/pyproject.toml
+++ b/sdk/dell/azure-mgmt-dellstorage/pyproject.toml
@@ -1,2 +1,86 @@
+[build-system]
+requires = [
+    "setuptools>=77.0.3",
+    "wheel",
+]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "azure-mgmt-dellstorage"
+authors = [
+    { name = "Microsoft Corporation", email = "azpysdkhelp@microsoft.com" },
+]
+description = "Microsoft Azure Dellstorage Management Client Library for Python"
+license = "MIT"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+]
+requires-python = ">=3.9"
+keywords = [
+    "azure",
+    "azure sdk",
+]
+dependencies = [
+    "isodate>=0.6.1",
+    "azure-mgmt-core>=1.6.0",
+    "typing-extensions>=4.6.0",
+]
+dynamic = [
+    "version",
+    "readme",
+]
+
+[project.urls]
+repository = "https://github.com/Azure/azure-sdk-for-python"
+
+[tool.setuptools.dynamic.version]
+attr = "azure.mgmt.dellstorage._version.VERSION"
+
+[tool.setuptools.dynamic.readme]
+file = [
+    "README.md",
+    "CHANGELOG.md",
+]
+content-type = "text/markdown"
+
+[tool.setuptools.packages.find]
+exclude = [
+    "tests*",
+    "generated_tests*",
+    "samples*",
+    "generated_samples*",
+    "doc*",
+    "azure",
+    "azure.mgmt",
+]
+
+[tool.setuptools.package-data]
+pytyped = [
+    "py.typed",
+]
+
 [tool.azure-sdk-build]
 breaking = false
+pyright = false
+mypy = false
+
+[packaging]
+package_name = "azure-mgmt-dellstorage"
+package_nspkg = "azure-mgmt-nspkg"
+package_pprint_name = "Dellstorage Management"
+package_doc_id = ""
+is_stable = true
+is_arm = true
+need_msrestazure = false
+need_azuremgmtcore = true
+sample_link = ""
+exclude_folders = ""
+title = "DellStorageMgmtClient"
diff --git a/sdk/dell/azure-mgmt-dellstorage/sdk_packaging.toml b/sdk/dell/azure-mgmt-dellstorage/sdk_packaging.toml
deleted file mode 100644
index f4c2aaeb388a..000000000000
--- a/sdk/dell/azure-mgmt-dellstorage/sdk_packaging.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-[packaging]
-package_name = "azure-mgmt-dellstorage"
-package_nspkg = "azure-mgmt-nspkg"
-package_pprint_name = "Dellstorage Management"
-package_doc_id = ""
-is_stable = false
-is_arm = true
-need_msrestazure = false
-need_azuremgmtcore = true
-sample_link = ""
-exclude_folders = ""
-title = "DellStorageMgmtClient"
diff --git a/sdk/dell/azure-mgmt-dellstorage/setup.py b/sdk/dell/azure-mgmt-dellstorage/setup.py
deleted file mode 100644
index 76a1b8d8944e..000000000000
--- a/sdk/dell/azure-mgmt-dellstorage/setup.py
+++ /dev/null
@@ -1,82 +0,0 @@
-#!/usr/bin/env python
-
-# -------------------------------------------------------------------------
-# Copyright (c) Microsoft Corporation. All rights reserved.
-# Licensed under the MIT License. See License.txt in the project root for
-# license information.
-# --------------------------------------------------------------------------
-
-import re
-import os.path
-from io import open
-from setuptools import find_packages, setup
-
-# Change the PACKAGE_NAME only to change folder and different name
-PACKAGE_NAME = "azure-mgmt-dellstorage"
-PACKAGE_PPRINT_NAME = "Dellstorage Management"
-
-# a-b-c => a/b/c
-package_folder_path = PACKAGE_NAME.replace("-", "/")
-# a-b-c => a.b.c
-namespace_name = PACKAGE_NAME.replace("-", ".")
-
-# Version extraction inspired from 'requests'
-with open(
-    os.path.join(package_folder_path, "version.py")
-    if os.path.exists(os.path.join(package_folder_path, "version.py"))
-    else os.path.join(package_folder_path, "_version.py"),
-    "r",
-) as fd:
-    version = re.search(r'^VERSION\s*=\s*[\'"]([^\'"]*)[\'"]', fd.read(), re.MULTILINE).group(1)
-
-if not version:
-    raise RuntimeError("Cannot find version information")
-
-with open("README.md", encoding="utf-8") as f:
-    readme = f.read()
-with open("CHANGELOG.md", encoding="utf-8") as f:
-    changelog = f.read()
-
-setup(
-    name=PACKAGE_NAME,
-    version=version,
-    description="Microsoft Azure {} Client Library for Python".format(PACKAGE_PPRINT_NAME),
-    long_description=readme + "\n\n" + changelog,
-    long_description_content_type="text/markdown",
-    license="MIT License",
-    author="Microsoft Corporation",
-    author_email="azpysdkhelp@microsoft.com",
-    url="https://github.com/Azure/azure-sdk-for-python",
-    keywords="azure, azure sdk",  # update with search keywords relevant to the azure service / product
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.9",
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
-        "Programming Language :: Python :: 3.12",
-        "License :: OSI Approved :: MIT License",
-    ],
-    zip_safe=False,
-    packages=find_packages(
-        exclude=[
-            "tests",
-            # Exclude packages that will be covered by PEP420 or nspkg
-            "azure",
-            "azure.mgmt",
-        ]
-    ),
-    include_package_data=True,
-    package_data={
-        "pytyped": ["py.typed"],
-    },
-    install_requires=[
-        "isodate>=0.6.1",
-        "typing-extensions>=4.6.0",
-        "azure-common>=1.1",
-        "azure-mgmt-core>=1.5.0",
-    ],
-    python_requires=">=3.9",
-)
diff --git a/sdk/dell/azure-mgmt-dellstorage/tsp-location.yaml b/sdk/dell/azure-mgmt-dellstorage/tsp-location.yaml
index 70ff95837051..e3a07e9917b6 100644
--- a/sdk/dell/azure-mgmt-dellstorage/tsp-location.yaml
+++ b/sdk/dell/azure-mgmt-dellstorage/tsp-location.yaml
@@ -1,4 +1,4 @@
 directory: specification/dell/Dell.Storage.Management
-commit: a3baecd6571d7e4b979a7aef527d29a3509d4dc7
+commit: fb25c38a86b35dcf8bb03eaaa7844643bd92c5a2
 repo: Azure/azure-rest-api-specs
 additionalDirectories: