diff --git a/README.md b/README.md
index ab741c3..3dfe7a6 100644
--- a/README.md
+++ b/README.md
@@ -22,11 +22,9 @@ helm repo update
 You can run the following command to see the charts:
 
 ```console
-helm search repo greptime -l --devel
+helm search repo greptime
 ```
 
-**Note**: Since our charts are still in development, we don't release the stable release version, and the `--devel` option is required.
-
 ### Install the GreptimeDB Cluster
 
 If you want to deploy the GreptimeDB cluster, you can use the following command(use the `default` namespace):
@@ -37,10 +35,10 @@ If you want to deploy the GreptimeDB cluster, you can use the following command(
 
    ```console
    helm install etcd oci://registry-1.docker.io/bitnamicharts/etcd \
-   --set replicaCount=3 \
-   --set auth.rbac.create=false \
-   --set auth.rbac.token.enabled=false \
-   -n default
+     --set replicaCount=3 \
+     --set auth.rbac.create=false \
+     --set auth.rbac.token.enabled=false \
+     -n default
    ```
 
 2. **Deploy GreptimeDB operator**
@@ -52,23 +50,31 @@ If you want to deploy the GreptimeDB cluster, you can use the following command(
 
 3. **Deploy GreptimeDB cluster**
 
-   ```console
-   helm install mycluster greptime/greptimedb-cluster -n default
-   ```
-
-   If you already have the etcd cluster, you can configure the `etcdEndpoints`：
-
-   ```console
-   helm install mycluster greptime/greptimedb-cluster \
-   --set etcdEndpoints=etcd.default:2379 \
-   -n default
-   ```
-
-   You also can list the current releases by `helm` command:
+   - **Default Installation**
+
+     The default installation will use the local storage:
+     
+     ```console
+     helm install mycluster greptime/greptimedb-cluster -n default
+     ```
+
+   - **Use AWS S3 as backend storage**
+
+     Before installation, you must create the AWS S3 bucket, and the cluster will use the bucket as backend storage:
+     
+     ```console
+     helm template mycluster greptime/greptimedb-cluster -n default \
+       --set storage.s3.bucket=<your-bucket> \
+       --set storage.s3.region=<region-of-bucket> \
+       --set storage.s3.root=<root-directory-of-data> \
+       --set storage.s3.secretName=s3-credentials \
+       --set storage.credentials.secretName=s3-credentials \
+       --set storage.credentials.secretCreation.enabled=true \
+       --set storage.credentials.secretCreation.enableEncryption=false \
+       --set storage.credentials.secretCreation.data.access-key-id=<your-access-key-id> \
+       --set storage.credentials.secretCreation.data.secret-access-key=<your-secret-access-key>
+     ```
 
-   ```console
-   helm list -n default
-   ```
 
 4. **Use `kubectl port-forward` to access the GreptimeDB cluster**
 
diff --git a/charts/greptimedb-cluster/README.md b/charts/greptimedb-cluster/README.md
index 464b60f..efcb1a4 100644
--- a/charts/greptimedb-cluster/README.md
+++ b/charts/greptimedb-cluster/README.md
@@ -5,31 +5,56 @@ A Helm chart for deploying GreptimeDB cluster in Kubernetes
 ![Version: 0.1.2](https://img.shields.io/badge/Version-0.1.2-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.4.1](https://img.shields.io/badge/AppVersion-0.4.1-informational?style=flat-square)
 
 ## Source Code
+
 - https://github.com/GreptimeTeam/greptimedb
 
 ## How to install
 
-**Note**: Make sure you already install the [greptimedb-operator](../greptimedb-operator/README.md).
+### Prerequisites
+
+1. Install the [greptimedb-operator](../greptimedb-operator/README.md);
+
+2. Install the etcd cluster:
+
+   ```console
+   helm install etcd oci://registry-1.docker.io/bitnamicharts/etcd \
+     --set replicaCount=3 \
+     --set auth.rbac.create=false \
+     --set auth.rbac.token.enabled=false \
+     -n default
+   ```
+
+### Default installation
+
+The default installation will use the local storage:
 
 ```console
-# Add charts repo.
-helm repo add greptime https://greptimeteam.github.io/helm-charts/
-helm repo update
+helm install greptimedb-cluster greptime/greptimedb-cluster -n default
 ```
 
+### Use AWS S3 as backend storage
+
+Before installation, you must create the AWS S3 bucket, and the cluster will use the bucket as backend storage:
+
 ```console
-# Optional: Install etcd cluster.
-# You also can use your own etcd cluster.
-helm install etcd oci://registry-1.docker.io/bitnamicharts/etcd \
-    --set replicaCount=3 \
-    --set auth.rbac.create=false \
-    --set auth.rbac.token.enabled=false \
-    -n default
+helm install mycluster greptime/greptimedb-cluster \
+  --set storage.s3.bucket=<your-bucket> \
+  --set storage.s3.region=<region-of-bucket> \
+  --set storage.s3.root=<root-directory-of-data> \
+  --set storage.s3.secretName=s3-credentials \
+  --set storage.credentials.secretName=s3-credentials \
+  --set storage.credentials.secretCreation.enabled=true \
+  --set storage.credentials.secretCreation.enableEncryption=false \
+  --set storage.credentials.secretCreation.data.access-key-id=<your-access-key-id> \
+  --set storage.credentials.secretCreation.data.secret-access-key=<your-secret-access-key>
 ```
 
-```console
-# Install greptimedb in default namespace.
-helm install greptimedb-cluster greptime/greptimedb-cluster -n default
+If you set `storage.s3.root` as `mycluser`, then the data layout will be:
+
+```
+<your-bucket>
+├── mycluser
+│   ├── data/
 ```
 
 ## How to uninstall
diff --git a/charts/greptimedb-cluster/README.md.gotmpl b/charts/greptimedb-cluster/README.md.gotmpl
index d7c9e6a..510811f 100644
--- a/charts/greptimedb-cluster/README.md.gotmpl
+++ b/charts/greptimedb-cluster/README.md.gotmpl
@@ -4,31 +4,57 @@
 {{ template "chart.versionBadge" . }}{{ template "chart.typeBadge" . }}{{ template "chart.appVersionBadge" . }}
 
 ## Source Code
+
 - https://github.com/GreptimeTeam/greptimedb
 
 ## How to install
 
-**Note**: Make sure you already install the [greptimedb-operator](../greptimedb-operator/README.md).
+### Prerequisites
+
+1. Install the [greptimedb-operator](../greptimedb-operator/README.md);
+
+2. Install the etcd cluster:
+
+   ```console
+   helm install etcd oci://registry-1.docker.io/bitnamicharts/etcd \
+     --set replicaCount=3 \
+     --set auth.rbac.create=false \
+     --set auth.rbac.token.enabled=false \
+     -n default
+   ```
+
+
+### Default installation
+
+The default installation will use the local storage:
 
 ```console
-# Add charts repo.
-helm repo add greptime https://greptimeteam.github.io/helm-charts/
-helm repo update
+helm install greptimedb-cluster greptime/greptimedb-cluster -n default
 ```
 
+### Use AWS S3 as backend storage
+
+Before installation, you must create the AWS S3 bucket, and the cluster will use the bucket as backend storage:
+
 ```console
-# Optional: Install etcd cluster.
-# You also can use your own etcd cluster.
-helm install etcd oci://registry-1.docker.io/bitnamicharts/etcd \
-    --set replicaCount=3 \
-    --set auth.rbac.create=false \
-    --set auth.rbac.token.enabled=false \
-    -n default
+helm install mycluster greptime/greptimedb-cluster \
+  --set storage.s3.bucket=<your-bucket> \
+  --set storage.s3.region=<region-of-bucket> \
+  --set storage.s3.root=<root-directory-of-data> \
+  --set storage.s3.secretName=s3-credentials \
+  --set storage.credentials.secretName=s3-credentials \
+  --set storage.credentials.secretCreation.enabled=true \
+  --set storage.credentials.secretCreation.enableEncryption=false \
+  --set storage.credentials.secretCreation.data.access-key-id=<your-access-key-id> \
+  --set storage.credentials.secretCreation.data.secret-access-key=<your-secret-access-key>
 ```
 
-```console
-# Install greptimedb in default namespace.
-helm install greptimedb-cluster greptime/greptimedb-cluster -n default
+If you set `storage.s3.root` as `mycluser`, then the data layout will be:
+
+```
+<your-bucket>
+├── mycluser
+│   ├── data/
 ```
 
 ## How to uninstall