diff --git a/charts/karpenter-crd/templates/karpenter.azure.com_aksnodeclasses.yaml b/charts/karpenter-crd/templates/karpenter.azure.com_aksnodeclasses.yaml
index fb3d0ab25..ddf2aea44 100644
--- a/charts/karpenter-crd/templates/karpenter.azure.com_aksnodeclasses.yaml
+++ b/charts/karpenter-crd/templates/karpenter.azure.com_aksnodeclasses.yaml
@@ -168,7 +168,7 @@ spec:
                 default: 128
                 description: osDiskSizeGB is the size of the OS disk in GB.
                 format: int32
-                minimum: 100
+                minimum: 30
                 type: integer
               tags:
                 additionalProperties:
diff --git a/pkg/apis/crds/karpenter.azure.com_aksnodeclasses.yaml b/pkg/apis/crds/karpenter.azure.com_aksnodeclasses.yaml
index fb3d0ab25..ddf2aea44 100644
--- a/pkg/apis/crds/karpenter.azure.com_aksnodeclasses.yaml
+++ b/pkg/apis/crds/karpenter.azure.com_aksnodeclasses.yaml
@@ -168,7 +168,7 @@ spec:
                 default: 128
                 description: osDiskSizeGB is the size of the OS disk in GB.
                 format: int32
-                minimum: 100
+                minimum: 30
                 type: integer
               tags:
                 additionalProperties:
diff --git a/pkg/apis/v1alpha2/aksnodeclass.go b/pkg/apis/v1alpha2/aksnodeclass.go
index 49f3764df..4d09d269c 100644
--- a/pkg/apis/v1alpha2/aksnodeclass.go
+++ b/pkg/apis/v1alpha2/aksnodeclass.go
@@ -33,7 +33,7 @@ type AKSNodeClassSpec struct {
 	// +optional
 	VNETSubnetID *string `json:"vnetSubnetID,omitempty"`
 	// +kubebuilder:default=128
-	// +kubebuilder:validation:Minimum=100
+	// +kubebuilder:validation:Minimum=30
 	// osDiskSizeGB is the size of the OS disk in GB.
 	OSDiskSizeGB *int32 `json:"osDiskSizeGB,omitempty"`
 	// ImageID is the ID of the image that instances use.
diff --git a/pkg/controllers/nodeclass/hash/suite_test.go b/pkg/controllers/nodeclass/hash/suite_test.go
index 0fac30d3e..23ccf597a 100644
--- a/pkg/controllers/nodeclass/hash/suite_test.go
+++ b/pkg/controllers/nodeclass/hash/suite_test.go
@@ -114,7 +114,7 @@ var _ = Describe("NodeClass Hash Controller", func() {
 
 	},
 		Entry("ImageFamily Drift", &v1alpha2.AKSNodeClass{Spec: v1alpha2.AKSNodeClassSpec{ImageFamily: lo.ToPtr("AzureLinux")}}),
-		Entry("OSDiskSizeGB Drift", &v1alpha2.AKSNodeClass{Spec: v1alpha2.AKSNodeClassSpec{OSDiskSizeGB: lo.ToPtr(int32(100))}}),
+		Entry("OSDiskSizeGB Drift", &v1alpha2.AKSNodeClass{Spec: v1alpha2.AKSNodeClassSpec{OSDiskSizeGB: lo.ToPtr(int32(30))}}),
 		Entry("Tags Drift", &v1alpha2.AKSNodeClass{Spec: v1alpha2.AKSNodeClassSpec{Tags: map[string]string{"keyTag-test-3": "valueTag-test-3"}}}),
 	)
 	It("should update AKSNodeClass-hash-version annotation when the AKSNodeClass-hash-version on the NodeClass does not match with the controller hash version", func() {