Work on performance improvements with caching

application/classes/Model/VOLUMEUSAGE.php

@@ -14,8 +14,6 @@ class Model_VOLUMEUSAGE extends TSM_ORM {
 	protected $_primary_key = 'NODE_NAME'; // We need a primary key to detect that the object is loaded.
 	protected $_sorting = array(
 		'NODE_NAME'=>'ASC',
-#		'FILESPACE_NAME'=>'ASC', // @todo Disabled, as we were getting some SQL errors, when the query returned no records
-#		'VOLUME_NAME'=>'ASC',
 	);
 
 	protected $_has_one = array(