Wednesday, May 11, 2016

Migrating from Exchange 2010 to Exchange 2016 Part-7

Part 6 we covered basic configuration as well as pilot mailbox migration.

In this part i will work on bulk mailbox migration and public folder migration from Exchange 200 to Exchange 2016.

Bulk Mailbox Migration

Once we have tested the pilot users functionality, everything is working as expected, now we have to migrate bulk mailboxes from Exchange 2010 to Exchange 2016.
We can use PowerShell command to migrate mailbox, which is the best way:

Import-CSV "C:\Move.CSV" | Foreach (New-MoveRequest _identity $_.Identity -TargetDatabase MDB01)
we can also get the move status

Public Folder Migration

As you know most of our customer still using public folder in on premise Exchange 2010 and want to migrate on newer version

Once all mailbox migrated into Exchange Server 2016, now one of the most critical part is migrate the Exchange 2010 public folder to Exchange 2016.

Migrating Public Folder to Exchange 2016 slimier  to Migrating to Exchange 2013. 

You can check the my post to Migrate Public Folder in details which described step by steps 

There are some issue Data loss may occur during public folder migration to Exchange 2013, Exchange 2016, Before starting batch migration, make sure that all public folders have a replica on the public folder database that will be specified as the source for migration. Also, make sure that the public replication is in sync. You can check here for more workaround for Public folder migration.

Decommissioning the Exchange Server 2010

Now we are reached to remove the Exchange server 2010 from our Exchange environment. As we are good to go in Exchange Server 2016 environment, already we change the mail flow routing, assigned new offline address book, moved all legacy mailboxes on Exchange 2016 also we migrated public folder on new modern public folder.

Before removing the Exchange 2010 servers its important to verify the some of the application or devices are using the Exchange 2010 server as a relay server, we need to double check all devices & application has been moved on Exchange 2016 servers.

Also verify the inbound and outbound mail flow, it should be flow via Exchange 2016 servers.

For decommissioning the Exchange 2010 servers you need to follow up the ITSM process, there are some steps you have to follow up:

1. Double check all mailboxes has been migrated on Exchange 2016.
2. Verify all Public folder has been migrated to modern public folder in Exchange 2016.
3. Verify mail flow happening via Exchange 2016.
4. All related application & devices are configured Exchange 2016 servers as a relay server.
5. Once verify all above points stop the Exchange services from Exchange servers and set the disable state.
6. Monitor the Exchange environment for one week.
7. If everything working fine than shutdown the server for 2 week and monitor the environment.
8. If everything fine after shut downing the Exchange 2010 server process for decommissioning the Exchange 2010 servers.

In this articles i have covered mailbox bulk migration, public folder migration to modern public folder and decommissioning the Exchange Servers 2010.

Now we reached end of the series, hope i have covered everything which we need to follow up during migration.

I will be glad for any feedback for future improvement.


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