diff --git a/zaqar/storage/base.py b/zaqar/storage/base.py
index f69cb898a..e467cc25a 100644
--- a/zaqar/storage/base.py
+++ b/zaqar/storage/base.py
@@ -128,6 +128,11 @@ class DataDriverBase(DriverBase):
         """Return the health status based on different backends."""
         raise NotImplementedError
 
+    @abc.abstractmethod
+    def close(self):
+        """Close connections to the backend."""
+        raise NotImplementedError
+
     def _get_operation_status(self):
         op_status = {}
         status_template = lambda s, t, r: {'succeeded': s,
@@ -276,6 +281,11 @@ class ControlDriverBase(DriverBase):
         """Returns the driver's queue controller."""
         raise NotImplementedError
 
+    @abc.abstractmethod
+    def close(self):
+        """Close connections to the backend."""
+        raise NotImplementedError
+
 
 class ControllerBase(object):
     """Top-level class for controllers.
diff --git a/zaqar/storage/mongodb/driver.py b/zaqar/storage/mongodb/driver.py
index 8a0191daf..0243d8379 100644
--- a/zaqar/storage/mongodb/driver.py
+++ b/zaqar/storage/mongodb/driver.py
@@ -123,6 +123,9 @@ class DataDriver(storage.DataDriverBase):
         except pymongo.errors.PyMongoError:
             return False
 
+    def close(self):
+        self.connection.close()
+
     def _health(self):
         KPI = {}
         KPI['storage_reachable'] = self.is_alive()
@@ -212,6 +215,9 @@ class ControlDriver(storage.ControlDriverBase):
 
         self.mongodb_conf = self.conf[options.MANAGEMENT_MONGODB_GROUP]
 
+    def close(self):
+        self.connection.close()
+
     @decorators.lazy_property(write=False)
     def connection(self):
         """MongoDB client connection instance."""
diff --git a/zaqar/storage/pipeline.py b/zaqar/storage/pipeline.py
index ca2f2b6ba..d7df0fa42 100644
--- a/zaqar/storage/pipeline.py
+++ b/zaqar/storage/pipeline.py
@@ -126,6 +126,9 @@ class DataDriver(base.DataDriverBase):
     def capabilities(self):
         return self._storage.capabilities()
 
+    def close(self):
+        self._storage.close()
+
     def is_alive(self):
         return self._storage.is_alive()
 
diff --git a/zaqar/storage/pooling.py b/zaqar/storage/pooling.py
index 931deb17d..dd0c80152 100644
--- a/zaqar/storage/pooling.py
+++ b/zaqar/storage/pooling.py
@@ -86,6 +86,13 @@ class DataDriver(storage.DataDriverBase):
         # is neither used for pools creation nor flavor creation.
         return self.BASE_CAPABILITIES
 
+    def close(self):
+        cursor = self._pool_catalog._pools_ctrl.list(limit=0)
+        # Messages of each pool
+        for pool in next(cursor):
+            driver = self._pool_catalog.get_driver(pool['name'])
+            driver.close()
+
     def is_alive(self):
         cursor = self._pool_catalog._pools_ctrl.list(limit=0)
         pools = next(cursor)
diff --git a/zaqar/storage/redis/driver.py b/zaqar/storage/redis/driver.py
index aa3f81b51..e0fac6e36 100644
--- a/zaqar/storage/redis/driver.py
+++ b/zaqar/storage/redis/driver.py
@@ -174,6 +174,9 @@ class DataDriver(storage.DataDriverBase):
         except redis.exceptions.ConnectionError:
             return False
 
+    def close(self):
+        self.connection.close()
+
     def _health(self):
         KPI = {}
         KPI['storage_reachable'] = self.is_alive()
@@ -218,6 +221,9 @@ class ControlDriver(storage.ControlDriverBase):
 
         self.redis_conf = self.conf[options.MANAGEMENT_REDIS_GROUP]
 
+    def close(self):
+        self.connection.close()
+
     @decorators.lazy_property(write=False)
     def connection(self):
         """Redis client connection instance."""
diff --git a/zaqar/storage/sqlalchemy/driver.py b/zaqar/storage/sqlalchemy/driver.py
index 21968fae5..1f1c784df 100644
--- a/zaqar/storage/sqlalchemy/driver.py
+++ b/zaqar/storage/sqlalchemy/driver.py
@@ -75,7 +75,7 @@ class ControlDriver(storage.ControlDriverBase):
     def run(self, *args, **kwargs):
         return self.connection.execute(*args, **kwargs)
 
-    def close_connection(self):
+    def close(self):
         self.connection.close()
 
     @property
diff --git a/zaqar/tests/faulty_storage.py b/zaqar/tests/faulty_storage.py
index b51742d74..e09131b87 100644
--- a/zaqar/tests/faulty_storage.py
+++ b/zaqar/tests/faulty_storage.py
@@ -28,6 +28,9 @@ class DataDriver(storage.DataDriverBase):
     def __init__(self, conf, cache, control_driver):
         super(DataDriver, self).__init__(conf, cache, control_driver)
 
+    def close(self):
+        pass
+
     @property
     def default_options(self):
         return {}
@@ -64,6 +67,9 @@ class ControlDriver(storage.ControlDriverBase):
     def __init__(self, conf, cache):
         super(ControlDriver, self).__init__(conf, cache)
 
+    def close(self):
+        pass
+
     @property
     def queue_controller(self):
         return QueueController(self)
diff --git a/zaqar/tests/functional/base.py b/zaqar/tests/functional/base.py
index 339d42517..01c47c044 100644
--- a/zaqar/tests/functional/base.py
+++ b/zaqar/tests/functional/base.py
@@ -92,8 +92,10 @@ class FunctionalTestBase(testing.TestBase):
                 self.mconf.pooling = True
                 self.mconf.admin_mode = True
 
-            self.client = http.WSGIClient(
-                bootstrap.Bootstrap(self.mconf).transport.app)
+            boot = bootstrap.Bootstrap(self.mconf)
+            self.addCleanup(boot.storage.close)
+            self.addCleanup(boot.control.close)
+            self.client = http.WSGIClient(boot.transport.app)
 
         self.headers = helpers.create_zaqar_headers(self.cfg)
 
diff --git a/zaqar/tests/unit/transport/websocket/base.py b/zaqar/tests/unit/transport/websocket/base.py
index 3792eae08..5b283fe5e 100644
--- a/zaqar/tests/unit/transport/websocket/base.py
+++ b/zaqar/tests/unit/transport/websocket/base.py
@@ -43,6 +43,8 @@ class TestBase(testing.TestBase):
         self.conf.unreliable = True
         self.conf.admin_mode = True
         self.boot = bootstrap.Bootstrap(self.conf)
+        self.addCleanup(self.boot.storage.close)
+        self.addCleanup(self.boot.control.close)
 
         self.transport = self.boot.transport
         self.api = self.boot.api
diff --git a/zaqar/tests/unit/transport/wsgi/base.py b/zaqar/tests/unit/transport/wsgi/base.py
index 4b78210e9..4fd7bea71 100644
--- a/zaqar/tests/unit/transport/wsgi/base.py
+++ b/zaqar/tests/unit/transport/wsgi/base.py
@@ -46,6 +46,8 @@ class TestBase(testing.TestBase):
         self.conf.unreliable = True
         self.conf.admin_mode = True
         self.boot = bootstrap.Bootstrap(self.conf)
+        self.addCleanup(self.boot.storage.close)
+        self.addCleanup(self.boot.control.close)
 
         self.app = self.boot.transport.app