diff --git a/cinder_tempest_plugin/api/volume/admin/test_volume_backup.py b/cinder_tempest_plugin/api/volume/admin/test_volume_backup.py
new file mode 100644
index 0000000..d1fa730
--- /dev/null
+++ b/cinder_tempest_plugin/api/volume/admin/test_volume_backup.py
@@ -0,0 +1,140 @@
+# Copyright (C) 2020 Canonical Ltd.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.common import waiters
+from tempest import config
+from tempest.lib import decorators
+from tempest.lib import exceptions
+
+from cinder_tempest_plugin.api.volume import base
+
+CONF = config.CONF
+
+
+class VolumesBackupsTest(base.BaseVolumeAdminTest):
+    @classmethod
+    def setup_clients(cls):
+        super(VolumesBackupsTest, cls).setup_clients()
+        cls.admin_volume_client = cls.os_admin.volumes_client_latest
+        cls.backups_client = cls.os_primary.backups_client_latest
+        cls.volumes_client = cls.os_primary.volumes_client_latest
+
+    @classmethod
+    def skip_checks(cls):
+        super(VolumesBackupsTest, cls).skip_checks()
+        if not CONF.volume_feature_enabled.backup:
+            raise cls.skipException("Cinder backup feature disabled")
+
+    @decorators.idempotent_id('2daadb2e-409a-4ede-a6ce-6002ec324372')
+    def test_backup_crossproject_admin_negative(self):
+
+        # create vol as user
+        volume = self.volumes_client.create_volume(
+            size=CONF.volume.volume_size)['volume']
+        waiters.wait_for_volume_resource_status(
+            self.volumes_client,
+            volume['id'], 'available')
+
+        # create backup as user
+        backup = self.backups_client.create_backup(
+            volume_id=volume['id'])['backup']
+        waiters.wait_for_volume_resource_status(
+            self.backups_client,
+            backup['id'], 'available')
+
+        # try to create incremental backup as admin
+        self.assertRaises(
+            exceptions.BadRequest, self.admin_backups_client.create_backup,
+            volume_id=volume['id'], incremental=True)
+
+    @decorators.idempotent_id('b9feb593-5809-4207-90d3-28e627730f13')
+    def test_backup_crossproject_user_negative(self):
+
+        # create vol as user
+        volume = self.volumes_client.create_volume(
+            size=CONF.volume.volume_size)['volume']
+        waiters.wait_for_volume_resource_status(
+            self.volumes_client,
+            volume['id'], 'available')
+
+        # create backup as admin
+        backup = self.admin_backups_client.create_backup(
+            volume_id=volume['id'])['backup']
+        waiters.wait_for_volume_resource_status(
+            self.admin_backups_client,
+            backup['id'], 'available')
+
+        # try to create incremental backup as user
+        self.assertRaises(
+            exceptions.BadRequest, self.backups_client.create_backup,
+            volume_id=volume['id'], incremental=True)
+
+    @decorators.idempotent_id('ce15f528-bfc1-492d-81db-b6168b631587')
+    def test_incremental_backup_respective_parents(self):
+
+        # create vol as user
+        volume = self.volumes_client.create_volume(
+            size=CONF.volume.volume_size)['volume']
+        waiters.wait_for_volume_resource_status(
+            self.volumes_client,
+            volume['id'], 'available')
+
+        # create backup as admin
+        backup_adm = self.admin_backups_client.create_backup(
+            volume_id=volume['id'])['backup']
+        waiters.wait_for_volume_resource_status(
+            self.admin_backups_client,
+            backup_adm['id'], 'available')
+
+        # create backup as user
+        backup_usr = self.backups_client.create_backup(
+            volume_id=volume['id'])['backup']
+        waiters.wait_for_volume_resource_status(
+            self.backups_client,
+            backup_usr['id'], 'available')
+
+        # refresh admin backup and assert no child backups
+        backup_adm = self.admin_backups_client.show_backup(
+            backup_adm['id'])['backup']
+        self.assertFalse(backup_adm['has_dependent_backups'])
+
+        # create incremental backup as admin
+        backup_adm_inc = self.admin_backups_client.create_backup(
+            volume_id=volume['id'], incremental=True)['backup']
+        waiters.wait_for_volume_resource_status(
+            self.admin_backups_client,
+            backup_adm_inc['id'], 'available')
+
+        # refresh user backup and assert no child backups
+        backup_usr = self.backups_client.show_backup(
+            backup_usr['id'])['backup']
+        self.assertFalse(backup_usr['has_dependent_backups'])
+
+        # refresh admin backup and assert it has childs
+        backup_adm = self.admin_backups_client.show_backup(
+            backup_adm['id'])['backup']
+        self.assertTrue(backup_adm['has_dependent_backups'])
+
+        # create incremental backup as user
+        backup_usr_inc = self.backups_client.create_backup(
+            volume_id=volume['id'], incremental=True)['backup']
+        waiters.wait_for_volume_resource_status(
+            self.backups_client,
+            backup_usr_inc['id'], 'available')
+
+        # refresh user backup and assert it has childs
+        backup_usr = self.backups_client.show_backup(
+            backup_usr['id'])['backup']
+        self.assertTrue(backup_usr['has_dependent_backups'])
diff --git a/cinder_tempest_plugin/api/volume/base.py b/cinder_tempest_plugin/api/volume/base.py
index 675d0bc..9abc5db 100644
--- a/cinder_tempest_plugin/api/volume/base.py
+++ b/cinder_tempest_plugin/api/volume/base.py
@@ -164,3 +164,4 @@
         super(BaseVolumeAdminTest, cls).setup_clients()
 
         cls.admin_volume_types_client = cls.os_admin.volume_types_client_latest
+        cls.admin_backups_client = cls.os_admin.backups_client_latest