Hello Mariette,
I just bought your SBS 2011 migration kit to Office 365. It looks great and I cannot await using it in the upcoming days!
An important question before I start: You mention at the beginning of the guide, that if you have a second dc installed the guide is not usable. That's sad, because exactly this is my scenario!
I have a SBS 2011 and a second Domain Controller as member server at the customer's side. This because he has two sites and we wanted to place a dc on both of them (1x SBS2011 on primary site, 1x Windows Server 2016 dc on secondary site - no Exchange, fsmo etc. of course; both sites connected via VPN).
Can you explain to me why the guide is not usable in this situation? Are there specific points where I have to pay close attention to?
If there are many problems I can only consider demoting the member dc and promoting it again after migration...
Many thanks in advance,
Torsten
Hello Torsten,
Can you point me to the guide and chapter, please?
Torsten,
I think I found what you are asking for, it was in https://server-essentials.com/support/cutover-migration-sbs2011-exchange-server-2010-to-office-365. I may need to rewrite that part because it is indeed confusing. What I am trying to prevent is that you have another DC in your network that has either AADsync installed or in the case of Essentials it has Office 365 integration wizard that has been run. In both of these cases, Azure is already hooked up with your AD and then the migration as proposed will fail.
So, it does not matter if you have another DC in your Lan as long as there is NO AD integration of any kind. The way the migration proceeds is that as soon as the endpoints have been defined in Office 365 and Office 365 is ready to connect to your Exchange Server 2010 it will create mailboxes and thus accounts for any mailbox it finds.
Hope this clears things for you?
Sure, sorry!
This guide: https://server-essentials.com/support/cutover-migration-sbs2011-exchange-server-2010-to-office-365
Before chapter 1, last paragraph:
"This tutorial assumes that the SBS 2011 is still the one and the ONLY domain controller in your network. If you already have installed another domain controller ... then this tutorial is NOT for your situation."
Yes, thanks!