DOCSP-14302 arbiters not supported with quarterlies

source/core/replica-set-arbiter.txt

@@ -20,11 +20,8 @@ cost constraints prohibit adding another secondary), you may choose to
 add an arbiter to your replica set. An arbiter does **not** have a copy
 of the data set and **cannot** become a primary. However, an arbiter
 participates in :ref:`elections for primary <replica-set-elections>`.
-An arbiter has exactly ``1`` election vote.
-
-.. versionchanged:: 3.6
-
-   .. include:: /includes/fact-arbiter-priority.rst
+By default an arbiter has priority ``0``. An arbiter has exactly ``1``
+election vote.
 
 .. important::
 
@@ -35,6 +32,11 @@ To add an arbiter, see :doc:`/tutorial/add-replica-set-arbiter`.
 
 .. end-content
 
+Release Version Considerations
+------------------------------
+
+.. include:: /includes/5.1/fact-do-not-use-with-quarterlies.rst
+
 Example
 -------
 
@@ -88,3 +90,4 @@ exchanges are not encrypted.
 
 As with all MongoDB components, run arbiters in trusted network
 environments.
+

source/includes/5.1/fact-do-not-use-with-quarterlies.rst

@@ -0,0 +1,5 @@
+:ref:`Arbiters <replica-set-arbiters>` are not supported with
+:ref:`quarterly rapid releases <release-version-numbers>` releases. If
+your deployment includes arbiters, only use
+:abbr:`LTS (Long Term Support)` releases.
+

source/release-notes/5.1-compatibility.txt

@@ -0,0 +1,76 @@
+====================================
+Compatibility Changes in MongoDB 5.1
+====================================
+
+.. default-domain:: mongodb
+
+.. contents:: On this page
+   :local:
+   :backlinks: none
+   :depth: 1
+   :class: singlecol
+
+The following 5.1 changes can affect compatibility with older
+versions of MongoDB.
+
+Removed Commands
+----------------
+
+Starting in MongoDB 5.1, these database commands and
+:binary:`~bin.mongo` shell helper methods are removed:
+
+.. list-table::
+   :header-rows: 1
+
+   * - Removed Command
+     - Alternative
+   * -
+     -
+
+Removed Parameters
+------------------
+
+Removed Index Types
+-------------------
+
+Removed Metrics
+---------------
+
+Shell Changes
+-------------
+
+Replica Sets
+------------
+
+Arbiters
+~~~~~~~~
+
+.. include:: /includes/5.1/fact-do-not-use-with-quarterlies.rst
+
+Auditing
+--------
+
+General Changes
+---------------
+
+Deprecations
+------------
+
+.. list-table::
+   :widths: 20 80
+   :header-rows: 1
+
+   * - Deprecated
+     - Description
+   * - 
+     - 
+
+.. _5.1-compatibility-enabled:
+
+5.1 Feature Compatibility
+-------------------------
+
+Some features in 5.1 require the 5.1 binaries and the
+:ref:`featureCompatibilityVersion <view-fcv>` (fCV) must also be set to
+5.1. These features include:
+

source/release-notes/5.1.txt

@@ -43,3 +43,10 @@ Starting in MongoDB 5.1, the
 determines whether the temporary documents required for :ref:`retryable
 <retryable-writes>` :dbcommand:`findAndModify` commands are stored in
 the *side* collection (``config.image_collection``).
+
+.. toctree::
+   :titlesonly:
+   :hidden:
+
+   /release-notes/5.1-compatibility
+

source/tutorial/add-replica-set-arbiter.txt

@@ -34,6 +34,8 @@ server or a monitoring host.
 Considerations
 --------------
 
+.. include:: /includes/5.1/fact-do-not-use-with-quarterlies.rst
+
 Primary-Secondary-Arbiter Replica Sets
 --------------------------------------