Hello all, We want to move to Exchange 2007 in a few months. Currently we are running a postfix server as primary mail server. Needless to say that shared calendars and so are not possible :-) Exchange and Groupwise where the two system we looked into. Groupwise because we are running a Novell core here. (There will be an active synchronization between Novell e-Dir and MS AD installed by one of our partners) Our environment is not that big: 850 users with an average mail traffic generated by them. While reading and investigating the ideal setup a lot of scenarios passed the revue. The one included here: 1 and 2 is the one I tend to find the most robust for our environment. Since we are using VMWare on our IBM bladecenter and a Netapp SAN connected to it, my opinion was that some of the roles could be running in a VM. Of course are the mailbox server physical ones. Only the config of these is not really clear to me. Any thoughts and recommendations are very much appreciated! Thnx already in advance! Tim

The Config looks good. Here is what required for EX2007 Processor configurations for Exchange 2007 server roles Exchange 2007 server role Minimum Recommended Maximum Edge Transport 1 x processor core 2 x processor cores 6 x processor cores Hub Transport 1 x processor core 4 x processor cores 12 x processor cores Client Access 1 x processor core 4 x processor cores 6 x processor cores Unified Messaging 1 x processor core 4 x processor cores 6 x processor cores Mailbox 1 x processor core 4 x processor cores 12 x processor cores Multiple server roles (combinations of Hub Transport, Client Access, Unified Messaging, and Mailbox server roles) 1 x processor core 4 x processor cores 6 x processor cores Memory configurations for Exchange 2007 servers based on installed server roles Exchange 2007 server role Minimum per server Recommended Maximum per server Edge Transport 2 GB 1 GB per core (2 GB minimum) 16 GB Hub Transport 2 GB 1 GB per core (2 GB minimum) 16 GB Client Access 2 GB 2 GB per core (2 GB minimum) 16 GB Unified Messaging 2 GB 1 GB per core (2 GB minimum) 4 GB Mailbox 2 GB; also depends on number of storage groups (For information, see later in this topic.) 2 GB plus from 2megabytes (MB) to 5MB per mailbox. This is variable based on user profile. For more details, see "Mailbox Server Role" later in this topic. 32 GB Multiple roles (combinations of Hub Transport, Client Access, Unified Messaging, and Mailbox server roles) 4 GB; also depends on number of storage groups (For information, see later in this topic.) 8 GB plus from 2MB to 5MB per mailbox. This is variable based on user profile. For more details, see "Mailbox Server Role" later in this topic. 32 GB For the Storage Design you can opt for below http://technet.microsoft.com/en-us/library/bb124518.aspx You can also refer the below one to get in depth knowledge about the same Exchange 2007 Sizing Cheat Sheet http://www.msexchange.org/articles-tutorials/exchange-server-2007/planning-architecture/exchange-2007-sizing-cheat-sheet.html Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|