When you setup coexistence with Microsoft Exchange 2010 and 2013, you can manager you mailbox databases in different ways. Though the Exchange Management Console (EMC), Exchange Control Panel (ECP) or with Exchange Management Shell (EMS). Today I had to configure a new Microsoft Exchange 2013 environment in a existing Exchange 2010 environment, so this is a coexistence infrastructure.
When I had installed the new Exchange 2013 servers, and I had started the Exchange Management Shell (EMS) from the new Exchange 2013 server, I saw only the new Exchange 2013 database. But wait a minute, I had also a copple of mailbox databases configured on my existing Exchange 2010 environment. In the Exchange Control Panel (ECP), all the databases are visseble, but why not in the Exchange Management Shell?
The solution is pretty easy. Within Exchange 2013 there’s a new parameter that you can use with the Get-MailboxDatabase command. So the new parameter is -IncludePreExchange2013. The whole command should be: Get-Mailboxdatabase -IncludePreExchange2013.