Microsoft does have some recommendations on the size of the Exchange database that you may want to keep in mind: "Microsoft recommends that information store databases grow no larger than 50 GB. Assuming proper maintenance, there are no operational issues with running mailbox stores larger than 50 GB; however, backup and restore times may make larger mailbox stores unsuitable for some service level agreements (SLAs)." The article that I found with this information can be found at http://technet.microsoft.com/en-us/library/aa995715.aspx Ashley