Removing of default mailbox database in Exchange Server 2019

Raymond Supilanas 66 Reputation points


Good Day!

May I ask what is the impact in removing of default mailbox database in Exchange Server 2019?

We will create five mailbox database in Exchange Server 2019 Standard and configure the DAG.

May I also request what would the procedure or best practice before creating five mailbox database in Exchange Server 2019.


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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Accepted answer
  1. Andy David - MVP 138K Reputation points MVP

    Yes, that is normal: E4E Encryption Store

    To change the file name on disk, use:

2 additional answers

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  1. Andy David - MVP 138K Reputation points MVP

    NO impact if you do it right. :)
    First create the additional databases.
    Then move any and all arbitration mailboxes in the default database to the a new database you just created:

    Set-ADServerSettings -ViewEntireForest $true
    Get-Mailbox -Arbitration | New-MoveRequest -TargetDatabase <NewDB>

    Then ensure there are no other mailboxes on the default DB:

    Get-Mailbox -Database <DefaultDB>

    Move any that may be there.

    that's it. You can now remove the default database

  2. Joyce Shen - MSFT 16,626 Reputation points

    Hi anonymous user

    Any progress here, have you succeed removing the default mailbox database now?

    We could refer to the article here introduced the details about Move arbitration mailboxes in Exchange Server

    In addition, sometimes we may encounter the issue failed to remove database: This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder mailboxes or arbitration mailboxes.
    Executing the following cmdlets does not reveal any other types of mailboxes that reside in the database, then remove them or disable them:

    Get-Mailbox -Database "test database" -ResultSize Unlimited | New-MoveRequest -TargetDatabase "database"  
    Get-Mailbox | Where ArchiveDatabase -eq "test database" | New-MoveRequest -ArchiveOnly -ArchiveTargetDatabase "database"  
    Get-Mailbox -Database "test database" -Arbitration | New-MoveRequest -TargetDatabase "database"  
    Get-Mailbox -Database "test database" -PublicFolder | New-MoveRequest -TargetDatabase " Database"  
    Get-Mailbox -Database "test database" -AuditLog | New-MoveRequest -TargetDatabase "Mailbox Database 1"  
    Get-Mailbox -Database "test database" -Monitoring | Disable-Mailbox -Confirm:$false  

    And if you still have issue removing the database after performing the steps above, consider using ADSIEdit to finfish it.
    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

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