OMA can easily upgrade your software at any given cut-off date. The final decision-making authority rests solely with the SSM-Cluster, and not with the client. The accessibility of the client is checked for at the cut-off date. If the query is executed successfully, updates are deployed via push method. Turned off systems are woken up by WakeOnLan. Also, an early deployment is provided for the case that software packages are too large for an ad hoc transfer over network. In any event, the desired cut-off dates are met.