add readme

z2/README.md

@@ -102,6 +102,27 @@ The `frontend` service is a ervice resource that exposes the `frontend` deployme
         Port: `3000`
         Target Port: `3000`
 
+
+### PersistentVolumeClaim
+
+The `PersistentVolumeClaim` (is a resource that requests storage for a Pod. In this case, the PVC is used to request storage for the `p2p-node` Pod.
+
+- **Metadata:**
+  - Name: `node-data`
+  - Namespace: `veritas`
+
+- **Spec:**
+  - **Access Modes:** `ReadWriteOnce`
+
+    The PVC requests a volume with read-write access for a single node.
+
+  - **Resources:**
+    - **Requests:**
+      - Storage: `300Mi`
+
+        The PVC requests 300Mi of storage.
+
+
 # Accessibility 
 the frontend can be accessed through localhost:3000 on any web browser
 and the rpc server runs on localhost:6000