Exchange 2010 to Exchange Online migration if DirSync already exists?
Posted on 2014-01-16
We've recently been given the green light to fully migrate our on-premise Exchange 2010 to Exchange Online, and I'm reading through the process, which has led me to discover something I consider quite alarming.
To set the scene, we've had Lync Online deployed for the last year or so (although it receives very little use), and due to that, have already deployed ADFS 2.0 and the DirSync tool within our organisation...
Now, I read that, because Exchange 2010 for some reason doesn't support Staged Migration to Exchange Online, our only real option is a Cutover migration (Hybrid doesn't really work for us, seeing as we want to actually do away with all on-premise Exchange infrastructure). However... I then read that, if you have already deployed DirSync within your org, then Cutover migration(s) will fail from the Exchange Online portal?
My question is, can we simply cancel our Lync Online subscription, remove our Vanity Domain from our existing Off365 account, remove DirSync/ADFS 2.0 and then create a brand new Off365 account, and setup the Vanity Domain from scratch, without having DirSync interfere? And if not, what are our options, please?
Thanks in advance