Forum Discussion
New Acquisition - migrating to O365
We recently did a hybrid migration from on premise exchange 2010 to O365. We are acquiring a new company that has on premise exchange 2010. What would be the easiest way to merge them into our email: 1. Do a cutover migration from their exchange to their own tenant then merge our tenant once we take them over OR 2. Figure out how to join their exchange to our domain, then migrate their users into our tenant.
HI Jenifer we are currently integrated more than 10 additionnal agencies , subsidiaries in our International deployment. We built a roadmap for Linux, Exchange, Lotus and validate the onboarding way with MS team. I would be pleased to discuss with you if needed. Lots of things to take into account
regards
Laurent TERUIN
lteruin@hotmail.com
the amount of users is indeed a factor to take in to consideration.
however, the identity part for me would make the difference.
- are you using AADConnect to synchronise your ad-objects?
- will you migrate the ad users in to your primary domain? (admt, ...)
what i would do is the following :
- make sure that the ad-objects are present in your primary domain (or by migrating them, or by just creating them)
- make sure to fill in the necessary details (not the currently used e-mailaddress)
- synchronise AADconnect
- configure your HCW on the Exchange 2010 server
- add the @tenantname.mail.onmicrosoft.Com as an alias to your mailbox
- and migrate all mailboxes to Office 365
- once all mailboxes are migrated you can add the domainname, and if needed change the primary address
these steps are quickly written down, please forgive me if I missed a step.
good luck,
Tom
So you and Juan say to use AAD connect. I have Azure AD connect set up on my server since we just did the Hybrid migration to O365. Quick read looks like it does not need any special licensing to do this? An outside vendor is the one that proposed to do the migration to a new tenant first. They were going to help with some of this since I also have another acquisition at the same time.
We were having the acquired company set up a new 2016 AD server ( I don't think exch 2010 will like that much) create a trust then join server to our domain, make it a DC with dhcp and dns. Migrate their users to this server using ADMT. Again the vendor was doing this part and wanted us to have the email migration done already. It does seem like a double migration so that prompted me to post on here. So would I leave out the ADMT and just use AAD connect?
Thanks
So after talking to the vendor, I guess I am just going to do a cutover migration to our current tenant so across forest cutover migration. I assume I will find some direction somewhere. Sorry and Thanks for your time.
- About 100 users
