Decommissioning Exchange 2010 Mailbox server

After successfully migration mailboxes from exchange 2010 to 2013 server, we can remove Exchange 2010 Mailbox servers. So let’s start:

First, we need to Delete old default OAB. To do that go to Organization Configuration -> Mailbox -> OAB and select default OAB and right-click on that and click Remove:

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Then we need to Click Databases. Remove all database copies from the servers unless last DAG member hosting the single copy of the databases. So:

  • I will delete only 2nd mailbox server database copies
  • then I will delete DAG memberships
  • then 1st mailbox database copies
  • And finally, I remove DAG

So Remove all database on TMB2:

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Click Yes:

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Click OK.

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To remove DAG membership click Manage Database Availability group membership…  by right-click on DAG1

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Select the servers and click X and then click Manage:

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Started removal process:

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Click Finish :

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Then we can remove other database copies on TMBX1. After removing all database remove the DAG1:

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Click Yes accept remove DAG1:

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And then we need remove Public Folders. If you created any folder on PF then you need to delete all that from PUBLIC FOLDER MANAGEMENT CONSOLE under TOOLS on EMC:

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Select folder and click Remove:

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Then go to Database Management and select PF and right-click on that click remove:

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Accept Yes to all :

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Click OK:

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The end all Mailbox databases deleted successfully:

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Now we can delete Exchange 2010 Mailbox server. Go to Control panel and uninstall exchange server:

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Click Next:

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Uncheck Mailbox role and click Next:

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Click Uninstall:

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Click Finish to complete process:

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Same way you can demote all another Mailbox server:

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That’s all.

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