Forum Discussion
Newlife
Feb 13, 2020Brass Contributor
Multiforest migration to Office 365
Hi Community, One of our customer has the below environment: Goal: All below forests needs to be synchronized to a single office 365 tenancy ( which could be a brand new tenancy ) so the...
Feb 13, 2020
Hi Newlife,
Based on your scenario the advice is to migrate Forest B,C and D to Forest A using a third-party tool and then when you have all consolidated on the same active directory and hybrid implemented, you can migrate to online.
Or you can create all users on Forest A, synchronize them and use a third-party tool to migrate the data from Tenant to Tenant.
Read more here https://docs.microsoft.com/en-us/exchange/mailbox-migration/migrate-mailboxes-across-tenants
Best regards,
Nuno Árias Silva
- NewlifeFeb 14, 2020Brass Contributor
NunoAriasSilva Thank you very much for your inputs.
I don't think your first approach (moving Forests B, C, D to forest A and then migrate to Office 365) will help because we're creating brand new tenant in Office 365 and then we need one more tenant to tenant migration which can be done by 3rd party tool only. right? please confirm.
- Feb 15, 2020
Hi Newlife,
You can create a new tenant and use a third-party tool to migrate all your data to a new tenant, but if you have an infrastructure already implemented with hybrid and using many services and have a lot of users compared to all other forests. The best way for time and cost is to consolidate all into the Forest A and then migrate the others, but you can migrate all to a new tenant if you need it. All of these migrations depending on the workload you are using you need to use third-party tools to each of workload.
Best Regards,
Nuno Árias Silva- NewlifeFeb 27, 2020Brass Contributor
NunoAriasSilva - now the approach have got slightly changed.
It has basically 2 phases:
Phase 1 :
Keep any one of the Office 365 Tenant and leverage single AAD Connect to sync from all the 4 on-prem ADs to this Office 365 Tenant.
Phase 2:
Create the brand new Office 365 Tenant and leverage Skykick for tenant to tenant migration.
Let's focus on Phase 1 and
Is there any best practices to complete Phase 1?
Many thanks!