diff --git a/cinder/tests/unit/backup/drivers/test_backup_nfs.py b/cinder/tests/unit/backup/drivers/test_backup_nfs.py
index 06a5eeb631b..be9186863c5 100644
--- a/cinder/tests/unit/backup/drivers/test_backup_nfs.py
+++ b/cinder/tests/unit/backup/drivers/test_backup_nfs.py
@@ -145,7 +145,7 @@ class BackupNFSSwiftBasedTestCase(test.TestCase):
                          mock.Mock(return_value=mock_remotefsclient))
         # Remove tempdir.
         self.addCleanup(shutil.rmtree, self.temp_dir)
-        for _i in range(0, 128):
+        for _i in range(0, 32):
             self.volume_file.write(os.urandom(1024))
 
     def test_backup_uncompressed(self):
@@ -261,7 +261,7 @@ class BackupNFSSwiftBasedTestCase(test.TestCase):
 
         # Verify sha contents
         content1 = service._read_sha256file(backup)
-        self.assertEqual(128 * 1024 / content1['chunk_size'],
+        self.assertEqual(32 * 1024 / content1['chunk_size'],
                          len(content1['sha256s']))
 
     def test_backup_cmp_shafiles(self):
diff --git a/cinder/tests/unit/test_backup_swift.py b/cinder/tests/unit/test_backup_swift.py
index 5f684349096..c0fb78690df 100644
--- a/cinder/tests/unit/test_backup_swift.py
+++ b/cinder/tests/unit/test_backup_swift.py
@@ -91,7 +91,7 @@ class BackupSwiftTestCase(test.TestCase):
         self.addCleanup(self.volume_file.close)
         # Remove tempdir.
         self.addCleanup(shutil.rmtree, self.temp_dir)
-        for _i in range(0, 128):
+        for _i in range(0, 64):
             self.volume_file.write(os.urandom(1024))
 
     def test_backup_swift_url(self):
@@ -237,7 +237,7 @@ class BackupSwiftTestCase(test.TestCase):
 
         # Verify sha contents
         content1 = service._read_sha256file(backup)
-        self.assertEqual(128 * 1024 / content1['chunk_size'],
+        self.assertEqual(64 * 1024 / content1['chunk_size'],
                          len(content1['sha256s']))
 
     def test_backup_cmp_shafiles(self):