diff --git a/src/aks-preview/HISTORY.rst b/src/aks-preview/HISTORY.rst
index e5238a43ef3..ed8f13edd8f 100644
--- a/src/aks-preview/HISTORY.rst
+++ b/src/aks-preview/HISTORY.rst
@@ -11,6 +11,7 @@ To release a new version, please select a new version number (usually plus 1 to
 
 Pending
 +++++++
+* Add validation to `az aks create` and `az aks update` while modifying the `--ephemeral-disk-volume-type` and `--ephemeral-disk-nvme-perf-tier` values.
 
 5.0.0b3
 ++++++++
diff --git a/src/aks-preview/azext_aks_preview/azurecontainerstorage/_validators.py b/src/aks-preview/azext_aks_preview/azurecontainerstorage/_validators.py
index 44592a41ca6..05b62908afa 100644
--- a/src/aks-preview/azext_aks_preview/azurecontainerstorage/_validators.py
+++ b/src/aks-preview/azext_aks_preview/azurecontainerstorage/_validators.py
@@ -303,20 +303,37 @@ def validate_enable_azure_container_storage_params(  # pylint: disable=too-many-
                         f'already enabled for storage pool option {enabled_options}.'
                     )
             else:
-                if ephemeral_disk_volume_type is not None and ephemeral_disk_nvme_perf_tier is None and \
+                if required_type_installed_for_disk_vol_type and \
+                   ephemeral_disk_volume_type is not None and \
+                   ephemeral_disk_nvme_perf_tier is None and \
                    existing_ephemeral_disk_volume_type.lower() == ephemeral_disk_volume_type.lower():
                     raise InvalidArgumentValueError(
                         'Azure Container Storage is already configured with --ephemeral-disk-volume-type '
                         f'value set to {existing_ephemeral_disk_volume_type}.'
                     )
 
-                if ephemeral_disk_nvme_perf_tier is not None and ephemeral_disk_volume_type is None and \
+                if required_type_installed_for_nvme_perf_tier and \
+                   ephemeral_disk_nvme_perf_tier is not None and \
+                   ephemeral_disk_volume_type is None and \
                    existing_ephemeral_disk_nvme_perf_tier.lower() == ephemeral_disk_nvme_perf_tier.lower():
                     raise InvalidArgumentValueError(
                         'Azure Container Storage is already configured with --ephemeral-disk-nvme-perf-tier '
                         f'value set to {existing_ephemeral_disk_nvme_perf_tier}.'
                     )
 
+                # pylint: disable=too-many-boolean-expressions
+                if required_type_installed_for_disk_vol_type and \
+                   ephemeral_disk_volume_type is not None and \
+                   existing_ephemeral_disk_volume_type.lower() == ephemeral_disk_volume_type.lower() and \
+                   required_type_installed_for_nvme_perf_tier and \
+                   ephemeral_disk_nvme_perf_tier is not None and \
+                   existing_ephemeral_disk_nvme_perf_tier.lower() == ephemeral_disk_nvme_perf_tier.lower():
+                    raise InvalidArgumentValueError(
+                        'Azure Container Storage is already configured with --ephemeral-disk-volume-type '
+                        f'value set to {existing_ephemeral_disk_volume_type} and --ephemeral-disk-nvme-perf-tier '
+                        f'value set to {existing_ephemeral_disk_nvme_perf_tier}.'
+                    )
+
         if storage_pool_option == CONST_ACSTOR_ALL:
             raise InvalidArgumentValueError(
                 f'Cannot set --storage-pool-option value as {CONST_ACSTOR_ALL} '
diff --git a/src/aks-preview/azext_aks_preview/tests/latest/test_validators.py b/src/aks-preview/azext_aks_preview/tests/latest/test_validators.py
index b3fba1c3fbe..c836b1f9f2a 100644
--- a/src/aks-preview/azext_aks_preview/tests/latest/test_validators.py
+++ b/src/aks-preview/azext_aks_preview/tests/latest/test_validators.py
@@ -969,6 +969,47 @@ def test_enable_with_ephemeral_disk_nvme_perf_tier_and_ephemeral_temp_disk_pool(
             )
         self.assertEqual(str(cm.exception), err)
 
+    def test_enable_with_same_ephemeral_disk_nvme_perf_tier_already_set(self):
+        perf_tier = acstor_consts.CONST_EPHEMERAL_NVME_PERF_TIER_PREMIUM
+        storage_pool_type = acstor_consts.CONST_STORAGE_POOL_TYPE_EPHEMERAL_DISK
+        err = (
+                "Azure Container Storage is already configured with --ephemeral-disk-nvme-perf-tier "
+                f"value set to {perf_tier}."
+        )
+        with self.assertRaises(InvalidArgumentValueError) as cm:
+            acstor_validator.validate_enable_azure_container_storage_params(
+                storage_pool_type, None, None, None, None, None, None, True, False, False, False, True, None, perf_tier, acstor_consts.CONST_DISK_TYPE_PV_WITH_ANNOTATION, acstor_consts.CONST_EPHEMERAL_NVME_PERF_TIER_PREMIUM
+            )
+        self.assertEqual(str(cm.exception), err)
+
+    def test_enable_with_same_ephemeral_disk_volume_type_already_set(self):
+        disk_vol_type = acstor_consts.CONST_DISK_TYPE_PV_WITH_ANNOTATION
+        storage_pool_type = acstor_consts.CONST_STORAGE_POOL_TYPE_EPHEMERAL_DISK
+        err = (
+                "Azure Container Storage is already configured with --ephemeral-disk-volume-type "
+                f"value set to {disk_vol_type}."
+        )
+        with self.assertRaises(InvalidArgumentValueError) as cm:
+            acstor_validator.validate_enable_azure_container_storage_params(
+                storage_pool_type, None, None, None, None, None, None, True, False, False, False, True, disk_vol_type, None, acstor_consts.CONST_DISK_TYPE_PV_WITH_ANNOTATION, acstor_consts.CONST_EPHEMERAL_NVME_PERF_TIER_PREMIUM
+            )
+        self.assertEqual(str(cm.exception), err)
+
+    def test_enable_with_same_ephemeral_disk_nvme_perf_tier_and_ephemeral_temp_disk_pool_already_set(self):
+        perf_tier = acstor_consts.CONST_EPHEMERAL_NVME_PERF_TIER_STANDARD
+        disk_vol_type = acstor_consts.CONST_DISK_TYPE_PV_WITH_ANNOTATION
+        storage_pool_type = acstor_consts.CONST_STORAGE_POOL_TYPE_EPHEMERAL_DISK
+        err = (
+                "Azure Container Storage is already configured with --ephemeral-disk-volume-type "
+                f"value set to {disk_vol_type} and --ephemeral-disk-nvme-perf-tier "
+                f"value set to {perf_tier}."
+        )
+        with self.assertRaises(InvalidArgumentValueError) as cm:
+            acstor_validator.validate_enable_azure_container_storage_params(
+                storage_pool_type, None, None, None, None, None, None, True, False, False, False, True, disk_vol_type, perf_tier, acstor_consts.CONST_DISK_TYPE_PV_WITH_ANNOTATION, acstor_consts.CONST_EPHEMERAL_NVME_PERF_TIER_STANDARD
+            )
+        self.assertEqual(str(cm.exception), err)
+
     def test_enable_with_option_all_and_ephemeral_disk_pool(self):
         storage_pool_name = "valid-name"
         storage_pool_option = acstor_consts.CONST_ACSTOR_ALL