diff --git a/doc/source/configuration/block-storage/drivers/ceph-rbd-volume-driver.rst b/doc/source/configuration/block-storage/drivers/ceph-rbd-volume-driver.rst
index 78c564b9ab9..948cbba0481 100644
--- a/doc/source/configuration/block-storage/drivers/ceph-rbd-volume-driver.rst
+++ b/doc/source/configuration/block-storage/drivers/ceph-rbd-volume-driver.rst
@@ -18,6 +18,27 @@ public or private clouds.
 
     Ceph architecture
 
+.. note::
+   **Supported Ceph versions**
+
+   The current `release cycle model for Ceph
+   <https://docs.ceph.com/en/latest/releases/general/>`_
+   targets a new release yearly on 1 March, with there being at most
+   two active stable releases at any time.
+
+   For a given OpenStack release, *Cinder supports the current Ceph
+   active stable releases plus the two prior releases.*
+
+   For example, at the time of the OpenStack Wallaby release in
+   April 2021, the Ceph active supported releases are Pacific and
+   Octopus.  The Cinder Wallaby release therefore supports Ceph
+   Pacific, Octopus, Nautilus, and Mimic.
+
+   Additionally, it is expected that the version of the Ceph client
+   available to Cinder or any of its associated libraries (os-brick,
+   cinderlib) is aligned with the Ceph server version.  Mixing server
+   and client versions is *unsupported* and may lead to anomalous behavior.
+
 RADOS
 ~~~~~
 
diff --git a/releasenotes/notes/announce-ceph-min-version-4eddb0def1c39928.yaml b/releasenotes/notes/announce-ceph-min-version-4eddb0def1c39928.yaml
new file mode 100644
index 00000000000..bb25933a7e4
--- /dev/null
+++ b/releasenotes/notes/announce-ceph-min-version-4eddb0def1c39928.yaml
@@ -0,0 +1,32 @@
+---
+upgrade:
+  - |
+    RBD driver: Prior to this release, the Cinder project did not have a
+    statement concerning what versions of Ceph are supported by Cinder.
+    We hereby announce that:
+
+    * For a given OpenStack release, Cinder supports the current Ceph
+      active stable releases plus the two prior releases.
+    * For any OpenStack release, it is expected that the versions of
+      the Ceph client and server are in alignment.
+
+    The `Ceph RADOS Block Device (RBD)
+    <https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/ceph-rbd-volume-driver.html>`__
+    driver documentation has been updated to reflect
+    this policy and explains it in more detail.
+other:
+  - |
+    **Supported Ceph versions**
+
+    The Cinder project wishes to clarify its policy concerning what versions
+    of Ceph are supported by Cinder.
+
+    * For a given OpenStack release, Cinder supports the current Ceph
+      active stable releases plus the two prior releases.
+    * For any OpenStack release, it is expected that the versions of
+      the Ceph client and server are in alignment.
+
+    The `Ceph RADOS Block Device (RBD)
+    <https://docs.openstack.org/cinder/latest/configuration/block-storage/drivers/ceph-rbd-volume-driver.html>`__
+    driver documentation has been updated to reflect
+    this policy and explains it in more detail.