diff --git a/docs/guides/advanced-cluster-new-sharding-schema.md b/docs/guides/advanced-cluster-new-sharding-schema.md
index 96df32a7f0..933ac32640 100644
--- a/docs/guides/advanced-cluster-new-sharding-schema.md
+++ b/docs/guides/advanced-cluster-new-sharding-schema.md
@@ -102,7 +102,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     num_shards = 2
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -117,7 +117,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
 
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -140,7 +140,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     zone_name  = "zone n1"
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -153,7 +153,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     zone_name  = "zone n1"
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -166,7 +166,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     zone_name  = "zone n2"
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -179,7 +179,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     zone_name  = "zone n2"
     region_configs {
     electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
     }
     provider_name = "AWS"
@@ -211,7 +211,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     replication_specs {
         region_configs {
             electable_specs {
-                instance_size = "M10"
+                instance_size = "M30"
                 node_count    = 3
             }
             provider_name = "AZURE"
@@ -235,7 +235,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     replication_specs {
         region_configs {
             electable_specs {
-                instance_size = "M10"
+                instance_size = "M30"
                 node_count    = 3
             }
             provider_name = "AZURE"
@@ -259,7 +259,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     replication_specs { # first shard
         region_configs {
             electable_specs {
-                instance_size = "M10"
+                instance_size = "M30"
                 node_count    = 3
             }
             provider_name = "AZURE"
@@ -271,7 +271,7 @@ resource "mongodbatlas_advanced_cluster" "test" {
     replication_specs { # second shard
         region_configs {
             electable_specs {
-                instance_size = "M10"
+                instance_size = "M30"
                 node_count    = 3
             }
             provider_name = "AZURE"
diff --git a/docs/resources/advanced_cluster.md b/docs/resources/advanced_cluster.md
index b5faddc492..a9bedc90aa 100644
--- a/docs/resources/advanced_cluster.md
+++ b/docs/resources/advanced_cluster.md
@@ -138,7 +138,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
   replication_specs {   # shard 1
     region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -148,7 +148,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
      region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -160,7 +160,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
   replication_specs {   # shard 2
     region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -168,9 +168,9 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
       region_name   = "US_EAST_1"
     }
 
-     region_configs { 
+    region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -200,7 +200,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -210,7 +210,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -224,7 +224,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -234,7 +234,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -248,7 +248,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -258,7 +258,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -272,7 +272,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs { 
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -282,7 +282,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
diff --git a/examples/mongodbatlas_advanced_cluster/asymmetric-sharded-cluster/main.tf b/examples/mongodbatlas_advanced_cluster/asymmetric-sharded-cluster/main.tf
index 3448b2d688..36ecccbe96 100644
--- a/examples/mongodbatlas_advanced_cluster/asymmetric-sharded-cluster/main.tf
+++ b/examples/mongodbatlas_advanced_cluster/asymmetric-sharded-cluster/main.tf
@@ -22,10 +22,10 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
     }
   }
 
-  replication_specs { # shard 2 - M20 instance size
+  replication_specs { # shard 2 - M30 instance size
     region_configs {
       electable_specs {
-        instance_size = "M20"
+        instance_size = "M30"
         disk_iops     = 3000
         node_count    = 3
       }
@@ -35,10 +35,10 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
     }
   }
 
-  replication_specs { # shard 3 - M10 instance size
+  replication_specs { # shard 3 - M40 instance size
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M40"
         disk_iops     = 3000
         node_count    = 3
       }
@@ -48,10 +48,10 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
     }
   }
 
-  replication_specs { # shard 4 - M10 instance size
+  replication_specs { # shard 4 - M40 instance size
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M40"
         disk_iops     = 3000
         node_count    = 3
       }
diff --git a/examples/mongodbatlas_advanced_cluster/global-cluster/main.tf b/examples/mongodbatlas_advanced_cluster/global-cluster/main.tf
index a691d60d50..af3644402b 100644
--- a/examples/mongodbatlas_advanced_cluster/global-cluster/main.tf
+++ b/examples/mongodbatlas_advanced_cluster/global-cluster/main.tf
@@ -18,7 +18,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -28,7 +28,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -42,7 +42,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -52,7 +52,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -66,7 +66,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -76,7 +76,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
@@ -90,7 +90,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       provider_name = "AWS"
@@ -100,7 +100,7 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       provider_name = "AZURE"
diff --git a/examples/mongodbatlas_advanced_cluster/multi-cloud/main.tf b/examples/mongodbatlas_advanced_cluster/multi-cloud/main.tf
index 4834de43ca..464e73c641 100644
--- a/examples/mongodbatlas_advanced_cluster/multi-cloud/main.tf
+++ b/examples/mongodbatlas_advanced_cluster/multi-cloud/main.tf
@@ -12,11 +12,11 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
   replication_specs { # shard 1
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       analytics_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 1
       }
       provider_name = "AWS"
@@ -26,11 +26,11 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       analytics_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 1
       }
       provider_name = "AZURE"
@@ -42,11 +42,11 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
   replication_specs { # shard 2
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 3
       }
       analytics_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 1
       }
       provider_name = "AWS"
@@ -56,11 +56,11 @@ resource "mongodbatlas_advanced_cluster" "cluster" {
 
     region_configs {
       electable_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 2
       }
       analytics_specs {
-        instance_size = "M10"
+        instance_size = "M30"
         node_count    = 1
       }
       provider_name = "AZURE"