Hi We are running planning on running Exchange 2007 with the max number of Storage Groups - 50. Each SG will have one DB, so there will be 50 DB's per server. We need to factor in backups, online database maintenance and the managed folder assistant here. Regarding the online maintenance and managed folder assistant, could someone let me know how they work? Will the database maintenance start working on one DB, finish, then start on another, or will it start on all of them/group of them at the same times, and finish as many as possible during the window. Same with the managed folder assistant. And what happens if the times for the managed folder assistant and online database clash - which one takes priority?