Exchange Online Mail Migration Process

In this post, I document the process of migrating mailboxes from Exchange 2013 on-premise to Exchange Online when in the Hybrid Configuration.  This assumes that you have already performed the following steps:

  • Office 365 tenant created
  • Azure AD Sync setup
  • Exchange Hybrid Configuration Setup

There are other migration methods (cutover, staged).  However, in this post, I focus upon the Hybrid scenario with remote move using the MRS.

Review Technet Documentation on Migration

Email Migration Process

  • In O365 Admin Center, check that the user’s doesn’t have a mailbox on o365

clip_image002

  • Check the mailbox and contacts in O365

clip_image004

  • Go to the Migration tab and create a new Migration Batch (hit +) and “Migrate To Exchange Online”

clip_image006

  • Add the users to migrate who are mail-enabled in O365 and have mailboxes on-premises.

clip_image008

  • Specify the Migration Endpoint.  This needs to be setup before running the Migration Batch.

clip_image010

  • Specify the batchname.

clip_image012

  • Specify whether to automatically complete the migration.  I am going to manually specify it so that I can control when the cutover happens.

clip_image014

  • Migration synchronization process begins.

clip_image016

  • Once the synchronization process is complete and when you’re ready to move the user to Office 365, start the “Completing the Migration Batch” process.

clip_image018

  • When its completed, the user’s mailbox is now on Exchange Online in Office 365.

clip_image020

  • If you check the Exchange server on-premises, you’ll notice that the mailbox type for the user is now “Office 365”.

clip_image022

  • In Office 365, if you go to Recipients > Mailboxes, you’ll see the users with mailboxes.

clip_image024

  • In Office 365, if you go to the Recipients > Contacts, you’ll notice that the users that you migrated will no longer have MailUser objects listed there.

clip_image026

  • To allow the user to access their mailbox in Office 365, you’ll need to add the Exchange Online license to the user.
  • If you check in remote powershell to Office 365, you’ll notice by running get-user and get-mailbox that the user’s mailbox is now on Office 365 as we saw in the web UI.

clip_image027

clip_image029

Advertisements
This entry was posted in Exchange, Office 365 and tagged , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s