Review the setup log file
You can also learn more about the installation and configuration of Exchange 2013 by reviewing the setup log file created during the setup process.
During installation, Exchange Setup logs events in the Application log of Event Viewer on computers that are running Windows Server 2008 R2 with Service Pack 1 (SP1) and Windows Server 2012. Review the Application log, and make sure there are no warning or error messages related to Exchange setup. These log files contain a history of each action that the system takes during Exchange 2013 setup and any errors that may have occurred. By default, the logging method is set to
Verbose. Information is available for each installed server role.
You can find the setup log file at <system drive>\ExchangeSetupLogs\ExchangeSetup.log. The <system drive> variable represents the root directory of the drive where the operating system is installed.
The setup log file tracks the progress of every task that is performed during the Exchange 2013 installation and configuration. The file contains information about the status of the prerequisite and system readiness checks that are performed before installation starts, the application installation progress, and the configuration changes that are made to the system. Check this log file to verify that the server roles were installed as expected.
We recommend that you start your review of the setup log file by searching for any errors. If you find an entry that indicates that an error occurred, read the associated text to figure out the cause of the error.
Early on in my hyperV test I didn't have the second server set to look at the SBS box for it's DNS settings. When you are in a test situation sometimes your networking isn't a great as it could be. So if you set static nics and have the second server have as it's DNS settings the main server, it will find the main domain controller and be happy.
What you see in my event logs is just that early whoopsie where I didn't have the DNS set and the second server couldn't find the DC
Blogging my way through a proof of concept migration from SBS 2008 to Essentials 2012 R2 series will be a SMB kitchen project whitepaper. More about the SMBKitchen project at - http://www.thirdtier.net/enterprise-solutions-for-small-business