Our current environment is Exchange 2007 SP2 Single Copy Cluster with a failed passive node, coexisting with Exchange 2010 SP2 standalone. Bringing the 2007 passive node back online is not an option.
The previous admin installed and configured the coexisting Exchange 2010 server, and the CAS and mailbox roles are functioning properly. We were never able to complete the migration to 2010, and at this point we now want to move to 2013. With 2007 being in a broken cluster with a failed passive node, I believe upgrading to SP3 is not going to be easy, making the move straight to 2013 difficult.
So my question is, would it be possible/feasible to complete the migration to 2010, then migrate from 2010 to 2013? Am I correct that migrating to 2010 only requires 2007 to be upgraded to SP2?