We have two server: Apollo and Perseo (temporary server)
Apollo has Windows 2008 and Exchange 2010
Perseo has Windows 2012 and Exchange 2016
We migrated all mailboxes from 2010 to 2016 so we can remove Exchange 2010 from Apollo,
Is it possible to uninstall Exchange 2010 from Apollo and make a Windows 2012 upgrade in place without a format??, then install Exchange 2016 in Apollo and migrate back all mailboxes? We prefer the simple way of in place upgrade, if not, we need to spend a lot extra time moving all the roles to one server and then back to Apollo.