diff --git a/.changelog/6512.txt b/.changelog/6512.txt
new file mode 100644
index 0000000000..9f5c42eea2
--- /dev/null
+++ b/.changelog/6512.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+notebooks: fixed perma-diff in `google_notebooks_instance`
+```
diff --git a/google-beta/resource_notebooks_instance.go b/google-beta/resource_notebooks_instance.go
index 5498db3c0f..a6c115b094 100644
--- a/google-beta/resource_notebooks_instance.go
+++ b/google-beta/resource_notebooks_instance.go
@@ -162,12 +162,11 @@ You can choose the size of the data disk based on how big your notebooks and dat
 If not specified, this defaults to 100.`,
 			},
 			"data_disk_type": {
-				Type:             schema.TypeString,
-				Optional:         true,
-				ForceNew:         true,
-				ValidateFunc:     validateEnum([]string{"DISK_TYPE_UNSPECIFIED", "PD_STANDARD", "PD_SSD", "PD_BALANCED", "PD_EXTREME", ""}),
-				DiffSuppressFunc: emptyOrDefaultStringSuppress("DISK_TYPE_UNSPECIFIED"),
-				Description:      `Possible disk types for notebook instances. Possible values: ["DISK_TYPE_UNSPECIFIED", "PD_STANDARD", "PD_SSD", "PD_BALANCED", "PD_EXTREME"]`,
+				Type:         schema.TypeString,
+				Optional:     true,
+				ForceNew:     true,
+				ValidateFunc: validateEnum([]string{"DISK_TYPE_UNSPECIFIED", "PD_STANDARD", "PD_SSD", "PD_BALANCED", "PD_EXTREME", ""}),
+				Description:  `Possible disk types for notebook instances. Possible values: ["DISK_TYPE_UNSPECIFIED", "PD_STANDARD", "PD_SSD", "PD_BALANCED", "PD_EXTREME"]`,
 			},
 			"disk_encryption": {
 				Type:             schema.TypeString,
@@ -738,9 +737,6 @@ func resourceNotebooksInstanceRead(d *schema.ResourceData, meta interface{}) err
 	if err := d.Set("custom_gpu_driver_path", flattenNotebooksInstanceCustomGpuDriverPath(res["customGpuDriverPath"], d, config)); err != nil {
 		return fmt.Errorf("Error reading Instance: %s", err)
 	}
-	if err := d.Set("data_disk_type", flattenNotebooksInstanceDataDiskType(res["dataDiskType"], d, config)); err != nil {
-		return fmt.Errorf("Error reading Instance: %s", err)
-	}
 	if err := d.Set("disk_encryption", flattenNotebooksInstanceDiskEncryption(res["diskEncryption"], d, config)); err != nil {
 		return fmt.Errorf("Error reading Instance: %s", err)
 	}
@@ -1030,10 +1026,6 @@ func flattenNotebooksInstanceCustomGpuDriverPath(v interface{}, d *schema.Resour
 	return v
 }
 
-func flattenNotebooksInstanceDataDiskType(v interface{}, d *schema.ResourceData, config *Config) interface{} {
-	return v
-}
-
 func flattenNotebooksInstanceDiskEncryption(v interface{}, d *schema.ResourceData, config *Config) interface{} {
 	return v
 }
diff --git a/google-beta/resource_notebooks_instance_generated_test.go b/google-beta/resource_notebooks_instance_generated_test.go
index 40361c54ce..ab223059bc 100644
--- a/google-beta/resource_notebooks_instance_generated_test.go
+++ b/google-beta/resource_notebooks_instance_generated_test.go
@@ -42,7 +42,7 @@ func TestAccNotebooksInstance_notebookInstanceBasicExample(t *testing.T) {
 				ResourceName:            "google_notebooks_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
+				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_type", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
 			},
 		},
 	})
@@ -81,7 +81,7 @@ func TestAccNotebooksInstance_notebookInstanceBasicContainerExample(t *testing.T
 				ResourceName:            "google_notebooks_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
+				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_type", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
 			},
 		},
 	})
@@ -124,7 +124,7 @@ func TestAccNotebooksInstance_notebookInstanceBasicGpuExample(t *testing.T) {
 				ResourceName:            "google_notebooks_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
+				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_type", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
 			},
 		},
 	})
@@ -170,7 +170,7 @@ func TestAccNotebooksInstance_notebookInstanceFullExample(t *testing.T) {
 				ResourceName:            "google_notebooks_instance.instance",
 				ImportState:             true,
 				ImportStateVerify:       true,
-				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
+				ImportStateVerifyIgnore: []string{"name", "instance_owners", "boot_disk_type", "boot_disk_size_gb", "data_disk_type", "data_disk_size_gb", "no_remove_data_disk", "metadata", "vm_image", "container_image", "location"},
 			},
 		},
 	})