diff --git a/src/IDF/Migrations/Backup.php b/src/IDF/Migrations/Backup.php
new file mode 100644
index 0000000..7b6af71
--- /dev/null
+++ b/src/IDF/Migrations/Backup.php
@@ -0,0 +1,109 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Backup of InDefero.
+ *
+ * !! You need also to backup Pluf if you want the full backup. !!
+ *
+ * @param string Path to the folder where to store the backup
+ * @param string Name of the backup (null)
+ * @return int The backup was correctly written
+ */
+function IDF_Migrations_Backup_run($folder, $name=null)
+{
+    $models = array(
+                    'IDF_Project',
+                    'IDF_Tag',
+                    'IDF_Issue',
+                    'IDF_IssueComment',
+                    'IDF_Conf',
+                    'IDF_Upload',
+                    'IDF_Search_Occ',
+                    'IDF_IssueFile',
+                    'IDF_Commit',
+                    'IDF_Timeline',
+                    'IDF_WikiPage',
+                    'IDF_WikiRevision',
+                    'IDF_Review',
+                    'IDF_Review_Patch',
+                    'IDF_Review_Comment',
+                    'IDF_Review_FileComment',
+                    'IDF_Key',
+                    'IDF_Scm_Cache_Git',
+                    );
+    $db = Pluf::db();
+    // Now, for each table, we dump the content in json, this is a
+    // memory intensive operation
+    $to_json = array();
+    foreach ($models as $model) {
+        $to_json[$model] = Pluf_Test_Fixture::dump($model, false);
+    }
+    if (null == $name) {
+        $name = date('Y-m-d');
+    }
+    return file_put_contents(sprintf('%s/%s-IDF.json', $folder, $name),
+                             json_encode($to_json), LOCK_EX);
+}
+
+/**
+ * Restore IDF from a backup.
+ *
+ * @param string Path to the backup folder
+ * @param string Backup name
+ * @return bool Success
+ */
+function IDF_Migrations_Backup_restore($folder, $name)
+{
+    $models = array(
+                    'IDF_Project',
+                    'IDF_Tag',
+                    'IDF_Issue',
+                    'IDF_IssueComment',
+                    'IDF_Conf',
+                    'IDF_Upload',
+                    'IDF_Search_Occ',
+                    'IDF_IssueFile',
+                    'IDF_Commit',
+                    'IDF_Timeline',
+                    'IDF_WikiPage',
+                    'IDF_WikiRevision',
+                    'IDF_Review',
+                    'IDF_Review_Patch',
+                    'IDF_Review_Comment',
+                    'IDF_Review_FileComment',
+                    'IDF_Key',
+                    'IDF_Scm_Cache_Git',
+                    );
+    $db = Pluf::db();
+    $schema = new Pluf_DB_Schema($db);
+    foreach ($models as $model) {
+        $schema->model = new $model();
+        $schema->createTables();
+    }
+    $full_data = json_decode(file_get_contents(sprintf('%s/%s-IDF.json', $folder, $name)), true);
+    foreach ($full_data as $model => $data) {
+        Pluf_Test_Fixture::load($data, false);
+    }
+    return true;
+}
\ No newline at end of file