diff --git a/cinder/tests/unit/volume/drivers/dell_emc/vmax/test_vmax.py b/cinder/tests/unit/volume/drivers/dell_emc/vmax/test_vmax.py
index 6f9779c95b0..72864a988fa 100644
--- a/cinder/tests/unit/volume/drivers/dell_emc/vmax/test_vmax.py
+++ b/cinder/tests/unit/volume/drivers/dell_emc/vmax/test_vmax.py
@@ -4979,6 +4979,15 @@ class VMAXCommonTest(test.TestCase):
             self.rest.rename_volume.assert_called_once_with(
                 self.data.array, self.data.device_id,
                 self.data.test_volume.id)
+        # Test for success when create storage group fails
+        with mock.patch.object(self.rest, 'rename_volume'):
+            with mock.patch.object(
+                    self.provision, 'create_storage_group',
+                    side_effect=exception.VolumeBackendAPIException):
+                self.common.unmanage(volume)
+                self.rest.rename_volume.assert_called_once_with(
+                    self.data.array, self.data.device_id,
+                    self.data.test_volume.id)
 
     def test_unmanage_device_not_found(self):
         volume = self.data.test_volume
diff --git a/cinder/volume/drivers/dell_emc/vmax/common.py b/cinder/volume/drivers/dell_emc/vmax/common.py
index 71fd6677fd2..8f85ee46dc1 100644
--- a/cinder/volume/drivers/dell_emc/vmax/common.py
+++ b/cinder/volume/drivers/dell_emc/vmax/common.py
@@ -2163,6 +2163,24 @@ class VMAXCommon(object):
             # Rename the volume to volumeId, thus remove the 'OS-' prefix.
             self.rest.rename_volume(
                 extra_specs[utils.ARRAY], device_id, volume_id)
+            # First check/create the unmanaged sg
+            # Don't fail if we fail to create the SG
+            try:
+                self.provision.create_storage_group(
+                    extra_specs[utils.ARRAY], utils.UNMANAGED_SG,
+                    extra_specs[utils.SRP], None,
+                    None, extra_specs=extra_specs)
+            except Exception as e:
+                msg = ("Exception creating %(sg)s. "
+                       "Exception received was %(e)s."
+                       % {'sg': utils.UNMANAGED_SG,
+                          'e': six.text_type(e)})
+                LOG.warning(msg)
+                return
+            # Try to add the volume
+            self.masking._check_adding_volume_to_storage_group(
+                extra_specs[utils.ARRAY], device_id, utils.UNMANAGED_SG,
+                volume_id, extra_specs)
 
     def manage_existing_snapshot(self, snapshot, existing_ref):
         """Manage an existing VMAX Snapshot (import to Cinder).
diff --git a/cinder/volume/drivers/dell_emc/vmax/utils.py b/cinder/volume/drivers/dell_emc/vmax/utils.py
index 7543d358335..277632ed273 100644
--- a/cinder/volume/drivers/dell_emc/vmax/utils.py
+++ b/cinder/volume/drivers/dell_emc/vmax/utils.py
@@ -81,6 +81,9 @@ OTHER_PARENT_SG = 'other_parent_sg_name'
 FAST_SG = 'fast_managed_sg'
 NO_SLO_SG = 'no_slo_sg'
 
+# SG for unmanaged volumes
+UNMANAGED_SG = 'OS-Unmanaged'
+
 # Cinder.conf vmax configuration
 VMAX_SERVER_IP = 'san_ip'
 VMAX_USER_NAME = 'san_login'
diff --git a/releasenotes/notes/orphaned_unmanaged_volume-db63ec0509b70b8f.yaml b/releasenotes/notes/orphaned_unmanaged_volume-db63ec0509b70b8f.yaml
new file mode 100644
index 00000000000..5e4a8216104
--- /dev/null
+++ b/releasenotes/notes/orphaned_unmanaged_volume-db63ec0509b70b8f.yaml
@@ -0,0 +1,7 @@
+---
+other:
+  - |
+    This PowerMax driver now puts the unmanaged "orphan" volume in a storage
+    group called OS-Unmanaged. It is not possible to query a volume's
+    associated snapvx snapshots using the PowerMax management software, unless
+    it belongs to a storage group.