diff --git a/cinder/volume/drivers/datera/datera_iscsi.py b/cinder/volume/drivers/datera/datera_iscsi.py
index 3cb08a32937..f70034b5d8b 100644
--- a/cinder/volume/drivers/datera/datera_iscsi.py
+++ b/cinder/volume/drivers/datera/datera_iscsi.py
@@ -99,6 +99,9 @@ class DateraDriver(san.SanISCSIDriver, api2.DateraApi, api21.DateraApi):
 
     HEADER_DATA = {'Datera-Driver': 'OpenStack-Cinder-{}'.format(VERSION)}
 
+    # TODO(jsbryant) Remove driver in the 'U' release if CI is not fixed.
+    SUPPORTED = False
+
     def __init__(self, *args, **kwargs):
         super(DateraDriver, self).__init__(*args, **kwargs)
         self.configuration.append_config_values(d_opts)
diff --git a/doc/source/reference/support-matrix.ini b/doc/source/reference/support-matrix.ini
index 5bb05062ab5..09643d63e27 100644
--- a/doc/source/reference/support-matrix.ini
+++ b/doc/source/reference/support-matrix.ini
@@ -196,7 +196,7 @@ notes=A vendor driver is considered supported if the vendor is
   accurate results. If a vendor doesn't meet this requirement
   the driver is marked unsupported and is removed if the problem
   isn't resolved before the end of the subsequent release.
-driver.datera=complete
+driver.datera=missing
 driver.dell_emc_powermax=complete
 driver.dell_emc_ps=complete
 driver.dell_emc_sc=complete
diff --git a/releasenotes/notes/datera-mark-unsupported-7b71d9124b3fded2.yaml b/releasenotes/notes/datera-mark-unsupported-7b71d9124b3fded2.yaml
new file mode 100644
index 00000000000..2a45d1b65a0
--- /dev/null
+++ b/releasenotes/notes/datera-mark-unsupported-7b71d9124b3fded2.yaml
@@ -0,0 +1,14 @@
+---
+upgrade:
+  - |
+    The driver for Datera's Storage Systems has been marked as unsupported
+    and is now deprecated. ``enable_unsupported_driver`` will need to
+    be set to ``True`` in the driver's section in cinder.conf to continue
+    to use it.
+deprecations:
+  - |
+    The driver for Datera's Storage Systems has been marked as unsupported
+    and is now deprecated. ``enable_unsupported_driver`` will need to
+    be set to ``True`` in the driver's section in cinder.conf to continue
+    to use it. If its support status does not change, it will be
+    removed in the 'U' development cycle.