diff --git a/datastore_server/dist/etc/service.properties b/datastore_server/dist/etc/service.properties
index f2546ebf32d243481e5eebeb587252c309e12d69..e86f9fa5cb762255b413e13f4ace9bf206491cb6 100644
--- a/datastore_server/dist/etc/service.properties
+++ b/datastore_server/dist/etc/service.properties
@@ -4,15 +4,6 @@ data-store-server-code = DSS1
 # The root directory of the data store
 storeroot-dir = data/store
 
-# The root directory of the hierarchical data store 
-# hierarchy-root-dir = data/hierarchical-store
-
-# The time between rebuilding the hierarchical store structure (in seconds)
-# hierarchy-rebuild-interval =  86400
-
-# The delay before the first build of hierarchical structure (in seconds)
-# hierarchy-build-delay = 0
-
 # Port
 port = 8444
 
@@ -117,6 +108,25 @@ main-thread.incoming-data-completeness-condition = marker-file
 # are considered associated to a database instance (not group private). 
 # main-thread.group-code = <change this>
 
+
+# ---------------------------------------------------------------------------
+# maintenance plugins configuration
+# ---------------------------------------------------------------------------
+
+# Comma separated names of maintenance plugins.  
+# Each plugin should have configuration properties prefixed with its name.
+# Mandatory properties for each <plugin> include: 
+#   <plugin>.class - Fully qualified plugin class name
+#   <plugin>.interval - The time between plugin executions (in seconds)
+#maintenance-plugins = 
+
+# Creates hierarchical version of the data store, based on the content of the database
+#hierarchy-builder.class = ch.systemsx.cisd.etlserver.plugins.HierarchicalStorageUpdater
+# The time between rebuilding the hierarchical store structure (in seconds)
+#hierarchy-builder.interval = 86400
+# The root directory of the hierarchical data store
+#hierarchy-builder.hierarchy-root-dir = data/hierarchical-store
+
 # ---------------- Plugin properties
 # The extractor class to use for code extraction
 main-thread.data-set-info-extractor = ch.systemsx.cisd.etlserver.DefaultDataSetInfoExtractor