Tuesday, January 19, 2016

Migration Exchange 2010 to Exchange 2013 -Part 12

Decommissioning Exchange 2010 
Now we reached final stage of the migration, before we can retire the old server we need to remove the all databases of those servers, even though we moved all mailboxes to Exchange 2013 servers, if you try to delete the database it will give you error that it is not empty, this is because it will have either Archive or Arbitration mailboxes in it, to see those mailboxes use following cmdlet:

  1. Open PowerShell Management and run following cmdlet     Get-Mailbox –Archive      Get-Mailbox –Arbitration                                                                                      
  2. You can see that still we have arbitration mailboxes in Exchange 2010 databases, to move those mailboxes use following command (Execute this command from Exchange 2013 Server). Get-Mailbox –Database “database name” –Arbirtration | New-MoveRequest – TargetDatabase “DB2”   
  3. Same command you can use for move your Archive mailboxes in case if you have. You may also have discovery search mailboxes that will need migrate, to do so use the following command: New-MoveRequest DiscoverySearchMailbox* -TargetDatabase “Mailboxe –Database-2013” 
  4. Wait a while and you can check the status of the mailbox movement with following command:
  5. Once mailbox moved you can verify in Exchange 2013 server,
  6. Now open Exchange 2010 Management Console select Organization Configuration-Mailbox-Database Management-select mailbox database-right click-Select Dismount Database.
  7. Now Remove the Database select Yes.
  8. Click on OK.
  9. Now we need to remove Offline address book, Select Offline Address Book Tab- Default Offline Address Book-Remove Select Yes.
  10. If you try and remove the Public folder database it will send error that it contain replicas which you can not remove, the easiest way I have found to remove it is as follows. Dismount the Public Folder Database.
  11. Then delete or move the database file (.edb) and the logs for this Database
  12. Then mount the database-Yes to all- it will mount empty database
  13. Select Ok.
  14. Now close the Exchange System Manager and open Control panel select Microsoft Exchange Server 2010 and select Uninstall
  15. Click Next
  16. Unselect all the installed roles-Unselect the Management tools-Next
  17. Click Next 
  18. Click on Uninstall.
  19. Again click on Uninstall
  20. Now click on finish

Finally we de-commissioned the Exchange 2010 from server and new environment is fully Exchange 2013.

That completes this article series on the overall steps required to transition from Exchange 2010 to Exchange 2013. I have covered a fair bit of ground during this series and I hope that it has given you some pointers on the various steps that can be performed during a transition. As always, it’s best to try these methods out in a lab environment before attempting them on your production servers.

Hope it will help you.

Glad to hear feedback...

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