diff --git a/pyengine/engine/controller/meta_manager.py b/pyengine/engine/controller/meta_manager.py
index bf0074025f207b521c132cee98826510e1d84c76..83280b123ffd456ea9d1c059c690d99c51c9dd0b 100644
--- a/pyengine/engine/controller/meta_manager.py
+++ b/pyengine/engine/controller/meta_manager.py
@@ -10,14 +10,15 @@ class MetaManager(object):
     def AddGroup(self, group_name, dimension):
         group = GroupTable.query.filter(GroupTable.group_name==group_id).first()
         if group:
-            return ErrorCode.ALREADY_EXIST, group_name, group_filenumber
+            return ErrorCode.ALREADY_EXIST, group_name
         else:
             new_group = GroupTable(group_name, dimension)
             GroupHandler.CreateGroupDirectory(group_id)
 
             # add into database
             db.session.add(new_group)
-            return ErrorCode.SUCCESS_CODE, group_name, 0
+            self.Sync()
+            return ErrorCode.SUCCESS_CODE, group_name
 
     @staticmethod
     def GetGroup(group_name):
diff --git a/pyengine/engine/controller/storage_manager.py b/pyengine/engine/controller/storage_manager.py
new file mode 100644
index 0000000000000000000000000000000000000000..f01f5b44a33ef3f3e736bc2a7c22a213f541e85b
--- /dev/null
+++ b/pyengine/engine/controller/storage_manager.py
@@ -0,0 +1,21 @@
+import os, shutil
+from engine.settings import DATABASE_DIRECTORY
+
+class StorageManager(object):
+    @staticmethod
+    def CreateGroup(group_name):
+        path = StorageManager.GetGroupDirectory(group_name)
+        path = path.strip()
+        path=path.rstrip("\\")
+        if not os.path.exists(path):
+            os.makedirs(path)
+
+    @staticmethod
+    def GetGroupDirectory(group_name):
+        return DATABASE_DIRECTORY + '/' + group_name
+
+    def Read():
+        pass
+
+    def Write():
+        pass
diff --git a/pyengine/engine/controller/tests/test_vector_engine.py b/pyengine/engine/controller/tests/test_vector_engine.py
index 3733a66dc3ea3c00cc296377c00e79f0b275d215..9eb84f6e08f819e340b1849161acbb6555d7c41b 100644
--- a/pyengine/engine/controller/tests/test_vector_engine.py
+++ b/pyengine/engine/controller/tests/test_vector_engine.py
@@ -27,10 +27,9 @@ class TestVectorEngine:
         assert file_number == 0
 
         # Add a group
-        code, group_id, file_number = VectorEngine.AddGroup('test_group', 8)
+        code, group_id = VectorEngine.AddGroup('test_group', 8)
         assert code == VectorEngine.SUCCESS_CODE
         assert group_id == 'test_group'
-        assert file_number == 0
 
         # Check the group existing
         code, group_id, file_number = VectorEngine.GetGroup('test_group')
diff --git a/pyengine/engine/controller/vector_engine.py b/pyengine/engine/controller/vector_engine.py
index 1b4875d5c1ed05283cea3a1e9ad30747bc1305b2..73f599c233d1159479d1c3f39f6531041034261b 100644
--- a/pyengine/engine/controller/vector_engine.py
+++ b/pyengine/engine/controller/vector_engine.py
@@ -11,6 +11,7 @@ from engine.controller.scheduler import Scheduler
 from engine.ingestion import serialize
 from engine.controller.meta_manager import MetaManager
 from engine.controller.error_code import ErrorCode
+from engine.controller.storage_manager import StorageManager
 import sys, os
 
 class VectorEngine(object):
@@ -24,15 +25,15 @@ class VectorEngine(object):
     def AddGroup(group_name, dimension):
         error, group = MetaManager.GetGroup(group_name)
         if(error == ErrorCode.SUCCESS_CODE):
-            return ErrorCode.FAULT_CODE, group_name, group.file_number
+            return ErrorCode.FAULT_CODE, group_name
         else:
+            StorageManager.CreateGroup(group_name)
             new_group = GroupTable(group_name, dimension)
-            GroupHandler.CreateGroupDirectory(group_name)
 
             # add into database
             db.session.add(new_group)
             db.session.commit()
-            return VectorEngine.SUCCESS_CODE, group_name, 0
+            return VectorEngine.SUCCESS_CODE, group_name
 
 
     @staticmethod
diff --git a/pyengine/engine/controller/views.py b/pyengine/engine/controller/views.py
index a40a113e087a6d8d616126269707a2778c74bb1e..51e57cfba7edfe04012b77c0f35614791f32f4e0 100644
--- a/pyengine/engine/controller/views.py
+++ b/pyengine/engine/controller/views.py
@@ -59,16 +59,16 @@ class Group(Resource):
     def post(self, group_id):
         args = self.__parser.parse_args()
         dimension = args['dimension']
-        code, group_id, file_number = VectorEngine.AddGroup(group_id, dimension)
-        return jsonify({'code': code, 'group': group_id, 'filenumber': file_number})
+        code, group_id = VectorEngine.AddGroup(group_id, dimension)
+        return jsonify({'code': code, 'group': group_id, 'filenumber': 0})
 
     def get(self, group_id):
         code, group_id, file_number = VectorEngine.GetGroup(group_id)
-        return jsonify({'code': code, 'group': group_id, 'filenumber': file_number})
+        return jsonify({'code': code, 'group': group_id, 'filenumber': 0})
 
     def delete(self, group_id):
         code, group_id, file_number = VectorEngine.DeleteGroup(group_id)
-        return jsonify({'code': code, 'group': group_id, 'filenumber': file_number})
+        return jsonify({'code': code, 'group': group_id, 'filenumber': 0})
 
 
 class GroupList(Resource):