diff --git a/mmv1/third_party/terraform/resources/resource_compute_instance.go.erb b/mmv1/third_party/terraform/resources/resource_compute_instance.go.erb
index 802cc0df6b86..822699a514ae 100644
--- a/mmv1/third_party/terraform/resources/resource_compute_instance.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_compute_instance.go.erb
@@ -194,8 +194,7 @@ func resourceComputeInstance() *schema.Resource {
 										AtLeastOneOf: initializeParamsKeys,
 										Computed:     true,
 										ForceNew:     true,
-										ValidateFunc: validation.StringInSlice([]string{"pd-standard", "pd-ssd", "pd-balanced"}, false),
-										Description:  `The Google Compute Engine disk type. One of pd-standard, pd-ssd or pd-balanced.`,
+										Description:  `The Google Compute Engine disk type. Such as pd-standard, pd-ssd or pd-balanced.`,
 									},
 
 									"image": {
diff --git a/mmv1/third_party/terraform/resources/resource_compute_instance_template.go.erb b/mmv1/third_party/terraform/resources/resource_compute_instance_template.go.erb
index 5cd62e722abf..ff677a832f05 100644
--- a/mmv1/third_party/terraform/resources/resource_compute_instance_template.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_compute_instance_template.go.erb
@@ -145,7 +145,7 @@ func resourceComputeInstanceTemplate() *schema.Resource {
 							Optional:    true,
 							ForceNew:    true,
 							Computed:    true,
-							Description: `The Google Compute Engine disk type. Can be either "pd-ssd", "local-ssd", "pd-balanced" or "pd-standard".`,
+							Description: `The Google Compute Engine disk type. Such as "pd-ssd", "local-ssd", "pd-balanced" or "pd-standard".`,
 						},
 
 						"labels": {
diff --git a/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb b/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
index 7a47afc50837..96ad3dec98ff 100644
--- a/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
@@ -411,9 +411,8 @@ func resourceDataprocCluster() *schema.Resource {
 													Optional:     true,
 													AtLeastOneOf: preemptibleWorkerDiskConfigKeys,
 													ForceNew:     true,
-													ValidateFunc: validation.StringInSlice([]string{"pd-standard", "pd-ssd", ""}, false),
 													Default:      "pd-standard",
-													Description:  `The disk type of the primary disk attached to each preemptible worker node. One of "pd-ssd" or "pd-standard". Defaults to "pd-standard".`,
+													Description:  `The disk type of the primary disk attached to each preemptible worker node. Such as "pd-ssd" or "pd-standard". Defaults to "pd-standard".`,
 												},
 											},
 										},
@@ -825,14 +824,13 @@ func instanceConfigSchema(parent string) *schema.Schema {
 							"boot_disk_type": {
 								Type:        schema.TypeString,
 								Optional:    true,
-								Description: `The disk type of the primary disk attached to each node. One of "pd-ssd" or "pd-standard". Defaults to "pd-standard".`,
+								Description: `The disk type of the primary disk attached to each node. Such as "pd-ssd" or "pd-standard". Defaults to "pd-standard".`,
 								AtLeastOneOf: []string{
 									"cluster_config.0." + parent + ".0.disk_config.0.num_local_ssds",
 									"cluster_config.0." + parent + ".0.disk_config.0.boot_disk_size_gb",
 									"cluster_config.0." + parent + ".0.disk_config.0.boot_disk_type",
 								},
 								ForceNew:     true,
-								ValidateFunc: validation.StringInSlice([]string{"pd-standard", "pd-ssd", ""}, false),
 								Default:      "pd-standard",
 							},
 						},
diff --git a/mmv1/third_party/terraform/utils/node_config.go.erb b/mmv1/third_party/terraform/utils/node_config.go.erb
index 8a725e00b17d..4bfbf1a2149e 100644
--- a/mmv1/third_party/terraform/utils/node_config.go.erb
+++ b/mmv1/third_party/terraform/utils/node_config.go.erb
@@ -49,8 +49,7 @@ func schemaNodeConfig() *schema.Schema {
 					Optional:     true,
 					Computed:     true,
 					ForceNew:     true,
-					ValidateFunc: validation.StringInSlice([]string{"pd-standard", "pd-balanced", "pd-ssd"}, false),
-					Description:  `Type of the disk attached to each node.`,
+					Description:  `Type of the disk attached to each node. Such as pd-standard, pd-balanced or pd-ssd`,
 				},
 
 				"guest_accelerator": &schema.Schema{
diff --git a/mmv1/third_party/terraform/website/docs/d/compute_instance_template.html.markdown b/mmv1/third_party/terraform/website/docs/d/compute_instance_template.html.markdown
index 34b74e27c344..a79164ef3493 100644
--- a/mmv1/third_party/terraform/website/docs/d/compute_instance_template.html.markdown
+++ b/mmv1/third_party/terraform/website/docs/d/compute_instance_template.html.markdown
@@ -153,8 +153,8 @@ The following arguments are supported:
     of the disk (such as those managed by `google_compute_disk`) to attach.
 ~> **Note:** Either `source` or `source_image` is **required** in a disk block unless the disk type is `local-ssd`. Check the API [docs](https://cloud.google.com/compute/docs/reference/rest/v1/instanceTemplates/insert) for details.
 
-* `disk_type` - The GCE disk type. Can be either `"pd-ssd"`,
-    `"local-ssd"`, `"pd-balanced"` or `"pd-standard"`.
+* `disk_type` - The GCE disk type. Such as `"pd-ssd"`, `"local-ssd"`,
+    `"pd-balanced"` or `"pd-standard"`.
 
 * `disk_size_gb` - The size of the image in gigabytes. If not
     specified, it will inherit the size of its base image. For SCRATCH disks,
diff --git a/mmv1/third_party/terraform/website/docs/r/compute_instance.html.markdown b/mmv1/third_party/terraform/website/docs/r/compute_instance.html.markdown
index 5ab9730e3c26..a3c4b9f5e324 100644
--- a/mmv1/third_party/terraform/website/docs/r/compute_instance.html.markdown
+++ b/mmv1/third_party/terraform/website/docs/r/compute_instance.html.markdown
@@ -221,7 +221,7 @@ is desired, you will need to modify your state file manually using
 * `size` - (Optional) The size of the image in gigabytes. If not specified, it
     will inherit the size of its base image.
 
-* `type` - (Optional) The GCE disk type. May be set to pd-standard, pd-balanced or pd-ssd.
+* `type` - (Optional) The GCE disk type. Such as pd-standard, pd-balanced or pd-ssd.
 
 * `image` - (Optional) The image from which to initialize this disk. This can be
     one of: the image's `self_link`, `projects/{project}/global/images/{image}`,
diff --git a/mmv1/third_party/terraform/website/docs/r/compute_instance_template.html.markdown b/mmv1/third_party/terraform/website/docs/r/compute_instance_template.html.markdown
index d4c158806cea..947a53ced6d7 100644
--- a/mmv1/third_party/terraform/website/docs/r/compute_instance_template.html.markdown
+++ b/mmv1/third_party/terraform/website/docs/r/compute_instance_template.html.markdown
@@ -399,8 +399,8 @@ The following arguments are supported:
     of the disk (such as those managed by `google_compute_disk`) to attach.
 ~> **Note:** Either `source` or `source_image` is **required** in a disk block unless the disk type is `local-ssd`. Check the API [docs](https://cloud.google.com/compute/docs/reference/rest/v1/instanceTemplates/insert) for details.
 
-* `disk_type` - (Optional) The GCE disk type. Can be either `"pd-ssd"`,
-    `"local-ssd"`, `"pd-balanced"` or `"pd-standard"`.
+* `disk_type` - (Optional) The GCE disk type. Such as `"pd-ssd"`, `"local-ssd"`,
+    `"pd-balanced"` or `"pd-standard"`.
 
 * `disk_size_gb` - (Optional) The size of the image in gigabytes. If not
     specified, it will inherit the size of its base image. For SCRATCH disks,