Review the Prerequisites and Considerations

Review the following prerequisites and considerations before you create an Exchange Online Backup Plan.

Creating an Exchange Online Backup Plan:

Prerequisites:

For Backup account:

• Use a backup service account with Global admin permissions.
• Add impersonation permission for backup user to the Exchange Online backup account to connect the Exchange Online organization, perform backups and restore.

  Note: If you do not add the backup account to the Discovery Management role group and do not assign the Application Impersonation permission, backup fails.

• Associate the Backup user account with one exchange online mailbox.

For Backup proxy:

• Log in to the Console.
• Install Arcserve UDP Agent on the proxy machine where you want to run backup/restore.

Considerations:

• While backing up a large set of users, you can use exchange groups for better backup and optimisation.
• Default setting for exchange online backup uses 4 backup threads (one thread per user) at a time. You can also modify the threads in configuration file of Engine\BIN\Office365\Arcserve.Office365.Exchange.config as follows:
• Copy

  <!--#region for multi thread-->
  <!--MultiThreadEnable default value:0. if enable, set 1.-->
  <add key="MultiThreadEnable" value ="1"/>
  <!--set how many thread will be used to backup mailbox. default value is 4-->
  <add key="MaxDegreeOfParallelismForMailbox" value="4"/>
  <!--#endregion-->

• We recommend to set the value from 1-5. The maximum possible value is 10. But, we do not recommend setting the value from 6-10.

Notes:

• UDP 8.0 supports the following:
• User mailbox
• Shared mailbox
• Mail-enabled Public folders
• Room mailboxes
• Equipment mailboxes
• Group mailboxes
• For more information about the best practices for Exchange Online, see Exchange Online Related.
• Microsoft has deprecated basic authentication in all its tenants effective October 1, 2022.

Creating an Exchange Online Backup Plan Using Modern Authentication (MA):

Review the Prerequisites before you create a plan using Modern Authentication.