TCM data storage: outline

Author: p7nov

doc/reference/tooling/tcm/index.rst

@@ -43,3 +43,4 @@ to read data. LDAP authorization is supported as well.
     tcm_audit_log
     tcm_configuration
     tcm_configuration_reference
+    tcm_data_storage

doc/reference/tooling/tcm/tcm_configuration_reference.rst

@@ -1040,8 +1040,7 @@ The ``log`` section defines the |tcm|  logging parameters.
 storage
 -------
 
-The ``storage`` section defines the parameters of the configuration storage that
-|tcm| uses for connected clusters.
+The ``storage`` section defines the parameters of the |tcm| data storage.
 
 -   :ref:`storage.provider <tcm_configuration_reference_storage_provider>`
 

doc/reference/tooling/tcm/tcm_data_storage.rst

@@ -0,0 +1,48 @@
+.. _tcm_data_storage:
+
+Data storage
+============
+
+
+..  include:: index.rst
+    :start-after: ee_note_tcm_start
+    :end-before: ee_note_tcm_end
+
+|tcm_full_name| stores its data in a storage
+one of two types: etcd and tarantool
+
+TCM data includes users/roles/clusters/etc.
+
+
+Storage connection parameters are storage.*
+
+TCM clustering: configure the same storage in two or more TCM instances
+
+Embedded storage for development purposes: tcm.etcd.embed and tcm.tarantool.embed
+
+
+etcd storage
+------------
+
+storage.etcd.* configuration parameters
+
+Tarantool-based storage
+-----------------------
+
+storage.tarantool.* configuration parameters
+
+
+Embedded data storage
+---------------------
+
+storage.etcd.embed.* configuration parameters
+
+.. code-block:: console
+
+    ./tcm --storage.etcd.embed.enabled
+    # or
+    ./tcm --storage.tarantool.embed.enabled
+
+Possible fine tuning:
+
+