Experienced a memory leak on Windows Server 2011 Small Business Server. Tried to analyze with Process-Explorer and finally found out that the Windows SBS-Manager and the SQL-Database (SBSMonitoring) are the processes which consume more and more memory over the time. After some research i agreed with disabling the two services (https://serverfault.com/questions/522647/removing-sbs-monitoring-permanently-sbs-2008-2011)