I have an Exchange 2007 server, two Exchange 2013 hybrid servers with mailbox, HT and CAS role installed and I have migrated most of my mailboxes from Exchange 2007 to Office 365 Exchange Online.
Everything works great but now I have to move the remaining mailboxes on exchange 2007, which for various reasons must remain on-premise, to the Exchange 2013 hybrid servers and then decommission my Exchange 2007 Exchange server. I am going to build a third Exchange 2013 hybrid server so I can configure a DAG.
I have the instructions on how to setup an IP-less DAG.
What should I be aware of during this process?
Are there any gotchas I should be aware of?
Aside from the DAG setup, are there any changes I need to make to my current Exchange 2013 hybrid server install?