Migration mailboxes with OneDrive between 2 tenants

Question

Hello,

How to correctly migrate users between tenants?

I have got tenant contosocom.onmicrosoft.com where I have 2 applied domains:

• contoso.com
• fabrikam.com

And I have a second tenant fabrikamcom.onmicrosoft.com where I need to migrate users from contosocom.onmicrosoft.com tenant.

On the main tenant, I have about 100 users with domains contoso.com and fabrikam.com.

I need to migrate only users with domain fabrikam.com.

What I would like to do it's shared domain fabrikam.com between tenants only for migration.

Have anyone instruction on how to do this correctly?

Answer 1

Hi @drClays,

Here are the steps to migrate OneDrive cross tenants.

• Step 1: Connect to the source and the target tenants.
• Step 2: Establish trust between the source and the target tenant
• Step 3: Verify trust has been established
• Step 4: Pre-create users and groups
• Step 5: Prepare identity mapping
• Step 6: Start a Cross-tenant OneDrive migration
• Step 7: Post migration steps

See detailed tutorials in this article: Cross-tenant OneDrive migration.

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