Hallo, in order to integrate our Windows 2003 Domain Controller to TSM we plan to upgrade our TSM server to 5.1 patchlevel (What do you think is best?). At the moment we use TSM 3.7.4.6 (Atape 8.2.5.0 ) running on AIX 4.3.3 ML 11. Does anyone have experience in upgrading from 3.7 to 5.1? Is it possible to do this upgrade without risk in one step not using TSM Version 4? Thanks in advance. Kindest regards, Thomas. -- Thomas Birke Rechenzentrum der Universitdt Augsburg (Zentrale Server, Unix), Universitdtsstr. 8, D-86159 Augsburg, Germany, Tel. +49-821-598-2051, Fax +49-821-598-2028, E-Mail birke@rz.uni-augsburg.de, http://www.rz.Uni-Augsburg.DE