Collaboration Migration Best Practices

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    Procurement Team

    hi 

     

    i am in the middle of a migration and noticed the lack of information regarding the way it works. Can you please detail a bit how can I map the users as an "advance option"? My SMTP is totally different from source to destination and cannot find anywhere how to overcome it

     

    Thanks

     

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    Steffen Knapp

    Hello Procurement Team, in case you have not received a response to your question, the correct syntax for user mapping is:

    RecipientMapping="user@sourcedomain.com->user@targetdomain.com"

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    Tommi Halme

    Add the Administrator account as an owner to the teams on the Source and the Destination. Detailed instructions available ?

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    Anne Kohler

    Hi Tommi,

    The instructions for adding an owner can be found in Microsoft Online Help.  A quick search found this article that provides instructions: https://support.office.com/en-us/article/make-someone-a-team-owner-09eb80c1-9f3b-4f6c-b6c0-45555d46ee2a.

    Microsoft may have more detailed instructions elsewhere in their Help Center as well. 

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    Tommi Halme

    If i need to migrate 700 teams i must find better way to add migrate account owner of all those 700 teams :)

     

     

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    Kyle Rinner

    Tommi,

    You should be able to find the commands you need in this Microsoft article.
    I believe you could use something like this to give an administrator owner rights to all the Teams:
    Get-Team | Add-TeamUser -User admin@domain.com -Role Owner

    Thank you

    Kyle

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    Steve Vassallo

    Can you run the Teams migration twice?   Almost like running the mailbox migration a couple times.  So you prestage the TEams, then run another pass to get anything you missed a couple days later?

     

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    Steffen Knapp

    Hi Steve,

    It's technically possible but you might run into the problem with the conversations, which is outlined in the guide above. I'm not a big fan of hitting the Reset button on a Teams migration either.

    I must admit while I've been curious, I've not yet tested this particular scenario for that very reason - messing up the conversations would cause a lot of trouble with my migrations.


    In a recent migration, we had to ask the business to reduce the scope of Teams, which they eventually brought down from 400 Teams with over 600 GB to 145 Teams with 120GB total prior to the migration.

    Under the original circumstances, the migration would have taken weeks to fully migrate in a one-stop migration but even with the final scope, it exceeded the planned weekend downtime.

    As a result, we had the business put a priority on their Teams, which I then migrated in three batches. I think this may be your best shot at it, segmenting the migration based on priority and ideally data volume. Once you complete one batch of selected teams, just upload the CSV for the next batch, and so on - and there's no need to reset the migration!

     

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    Anne Kohler

    Hi Steve and Steffen!

    Steffen, thank you so much for answering Steve's question!

    You are exactly right, while it's technically possible to run the Teams migration multiple times, it generally will cause issues with the conversations.  

    Using the CSV option to break up which teams are migrated so that you migrate in chunks is a much better option!

    Thanks again!

    Anne 

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    CAMPBELL KAY

    Hi

    i have noticed that none of my individual user conversations have come across, should that work? or is it purely the actual team data? 

    we had some issues with the user mapping so maybe this is the case.

    Can we re-run the migration with selected users only and conversation data only? as everything has been migrated successfully. 

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    Anne Kohler

    Hi Campbell,

    Private chats and private group chats are not migrated with MigrationWiz. If you mean that there are individual users in team chats that aren't working, then that would be a separate issue.

    I would strongly suggest opening a ticket with our Support Engineers.  They would be able to take a look and troubleshoot any issues or confirm if the migration is set up correctly. 

    I hope that helps,

    Anne

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