diff --git a/manila/share/drivers/hitachi/hsp/driver.py b/manila/share/drivers/hitachi/hsp/driver.py
index 3861968a..45ab824e 100644
--- a/manila/share/drivers/hitachi/hsp/driver.py
+++ b/manila/share/drivers/hitachi/hsp/driver.py
@@ -319,3 +319,6 @@ class HitachiHSPDriver(driver.ShareDriver):
                      "%(shr_id)s is no longer being managed."),
                  {'shr_path': share['export_locations'][0]['path'],
                   'shr_id': share['id']})
+
+    def get_default_filter_function(self):
+        return "share.size >= 128"
diff --git a/manila/tests/share/drivers/hitachi/hsp/test_driver.py b/manila/tests/share/drivers/hitachi/hsp/test_driver.py
index 4f832df5..99beb3c9 100644
--- a/manila/tests/share/drivers/hitachi/hsp/test_driver.py
+++ b/manila/tests/share/drivers/hitachi/hsp/test_driver.py
@@ -413,3 +413,10 @@ class HitachiHSPTestCase(test.TestCase):
         rest.HSPRestBackend.get_cluster.assert_called_once_with()
         mock__update_share_stats.assert_called_once_with(fakes.stats_data)
         self.assertTrue(self.mock_log.info.called)
+
+    def test_get_default_filter_function(self):
+        expected = "share.size >= 128"
+
+        actual = self._driver.get_default_filter_function()
+
+        self.assertEqual(expected, actual)
diff --git a/releasenotes/notes/add-hsp-default-filter-function-0af60a819faabfec.yaml b/releasenotes/notes/add-hsp-default-filter-function-0af60a819faabfec.yaml
new file mode 100644
index 00000000..c435d417
--- /dev/null
+++ b/releasenotes/notes/add-hsp-default-filter-function-0af60a819faabfec.yaml
@@ -0,0 +1,3 @@
+---
+fixes:
+  - Added missing default filter function on Hitachi HSP driver.
\ No newline at end of file