diff --git a/pkg/apis/etcd/v1beta2/cluster.go b/pkg/apis/etcd/v1beta2/cluster.go
index 889534b6b..8d9aba915 100644
--- a/pkg/apis/etcd/v1beta2/cluster.go
+++ b/pkg/apis/etcd/v1beta2/cluster.go
@@ -162,6 +162,11 @@ type PodPolicy struct {
 	// '.cluster.local'.
 	// The default is to not set a cluster domain explicitly.
 	ClusterDomain string `json:"ClusterDomain"`
+
+	// Sets the 'emptyDir.medium' field for the etcd-data volume to "Memory".
+	// The default is to not use memory as the storage medium
+	// No effect if persistent volume is used
+	Tmpfs bool `json:"tmpfs,omitempty"`
 }
 
 // TODO: move this to initializer
diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index fe4f297f4..1c66d5d26 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -377,9 +377,9 @@ func (c *Cluster) createPod(members etcdutil.MemberSet, m *etcdutil.Member, stat
 		if err != nil {
 			return fmt.Errorf("failed to create PVC for member (%s): %v", m.Name, err)
 		}
-		k8sutil.AddEtcdVolumeToPod(pod, pvc)
+		k8sutil.AddEtcdVolumeToPod(pod, pvc, false)
 	} else {
-		k8sutil.AddEtcdVolumeToPod(pod, nil)
+		k8sutil.AddEtcdVolumeToPod(pod, nil, c.cluster.Spec.Pod.Tmpfs)
 	}
 	_, err := c.config.KubeCli.CoreV1().Pods(c.cluster.Namespace).Create(pod)
 	return err
diff --git a/pkg/util/k8sutil/k8sutil.go b/pkg/util/k8sutil/k8sutil.go
index 8db36f18a..fe02742f7 100644
--- a/pkg/util/k8sutil/k8sutil.go
+++ b/pkg/util/k8sutil/k8sutil.go
@@ -247,7 +247,7 @@ func newEtcdServiceManifest(svcName, clusterName, clusterIP string, ports []v1.S
 }
 
 // AddEtcdVolumeToPod abstract the process of appending volume spec to pod spec
-func AddEtcdVolumeToPod(pod *v1.Pod, pvc *v1.PersistentVolumeClaim) {
+func AddEtcdVolumeToPod(pod *v1.Pod, pvc *v1.PersistentVolumeClaim, tmpfs bool) {
 	vol := v1.Volume{Name: etcdVolumeName}
 	if pvc != nil {
 		vol.VolumeSource = v1.VolumeSource{
@@ -255,6 +255,9 @@ func AddEtcdVolumeToPod(pod *v1.Pod, pvc *v1.PersistentVolumeClaim) {
 		}
 	} else {
 		vol.VolumeSource = v1.VolumeSource{EmptyDir: &v1.EmptyDirVolumeSource{}}
+		if tmpfs {
+			vol.VolumeSource.EmptyDir.Medium = v1.StorageMediumMemory
+		}
 	}
 	pod.Spec.Volumes = append(pod.Spec.Volumes, vol)
 }
@@ -274,7 +277,7 @@ func NewSeedMemberPod(clusterName string, ms etcdutil.MemberSet, m *etcdutil.Mem
 	token := uuid.New()
 	pod := newEtcdPod(m, ms.PeerURLPairs(), clusterName, "new", token, cs)
 	// TODO: PVC datadir support for restore process
-	AddEtcdVolumeToPod(pod, nil)
+	AddEtcdVolumeToPod(pod, nil, cs.Pod.Tmpfs)
 	if backupURL != nil {
 		addRecoveryToPod(pod, token, m, cs, backupURL)
 	}