Reverting Migration Exchange 2010 mailbox from backup

Wendell Jones 21 Reputation points

Hello everyone

I am in the middle of migrating users from Exchange 2010 to Exchange 2019.  The process went well for most of my users, 43 out of 65 then the Exchange
2019 database dismounted. It would not let me manually mount it. Before running any tools to see if the database was corrupted or not, I rebooted the Exchange 2019 server.  That is when I discovered it was not software, but a hardware issue.  Two of the six hard drives on the raid-5 failed. 

I am in the middle of rebuilding the Raid drive.  I am hopeful that will work, but in the event it does not, I have a question. I have a backup of the exchange
2010 database just prior to the migration and a full metal backup of the exchange 2016 the day before the migration.  If it is not possible to recover the exchange 2016 hardware, what steps do I need to perform to allow the users mailboxes of the exchange 2010 server back to the state they were in before the migration?

Thank you for your time.

Wendell Jones

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Wendell Jones 21 Reputation points

    The raid drive was unsalvageable. So we improvised. Used Azure AD Connect to push out the mailbox guid information to the cloud, Had all of the users make a duplicate of their outlook client data, imported those into the cloud. They are up and running. All the users on the 2010 machine, we used Bittitan and are moving them to the cloud. Made some changes to the cloud exchange service and we are moving. These are just broad strokes, I did not do the work.

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  2. Jame Xu-MSFT 4,171 Reputation points

    Hi @Wendell Jones ,

    Thanks for your feedback above which shared more information and glad to know that your issue is resolved now! Since our forum has the policy that The question author cannot accept their own answer. They can only accept answers by others, and according to the scenario introduced here: Answering your own questions on Microsoft Q&A

    I would make a brief summary of this post so that other forum members could easily find useful information here:

    [Reverting Migration Exchange 2010 mailbox from backup - Summary]

    Issue Symptom:
    Problems with mailbox migration, hard drive failure

    Migrate mailboxes to the cloud

    You could "Accept Answer" for this summary to close this thread, and your action would be helpful to other users who encounter the same issue and read this thread. Thanks for your understanding!

    If an Answer is helpful, please click "Accept Answer" and upvote it.

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