In this post, I will show the steps for in-place upgrade of Service Manager Data Warehouse management server (1801) OS from Microsoft Server 2012 R2 to 2016.

The OS upgrade is straight forward and may take up to 60 minutes depending on your environment.

1. Stop all Service Manager services.
   • Microsoft Monitoring Agent
   • System Center Data Access Service
   • System Center Management Configuration
2. Disable the DW Job schedules using the below code.

   Get-SCDWJob | ForEach-Object{ disable-SCDWJobschedule -JobName $_.Name}

3. Make sure that no DW job is running. Run Get-SCDWJob in order to list the status of the DW jobs. Status should be ‘Not Started’ for each job. If not wait for the jobs to be completed.
   
4. Insert the Windows Server 2016 ISO and start the upgrade process.
5. After the upgrade is completed, restart the server.
6. Start all Servive Manager services.
7. Enable DW Job schedules by running the below code:

   Get-SCDWJob | ForEach-Object{ enable-SCDWJobschedule -JobName $_.Name}

8. Periodically run Get-SCDWJob in order to list the status of the DW jobs.
   
9. Check Event Logs for any errors.