Review the Prerequisites and Considerations

Considerations:

You can also use a non-admin account for Office 365 backups. Such an account has access to its own mailbox only.

Prerequisites:

For Backup account:

• 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.
• Default setting  for exchange online backup is using 4 threads for each node. You can also modify the threads in configuration file of Engine\BIN\Office365\Arcserve.Office365.Exchange.config as follows:
• <!--#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.

For Backup proxy:

• Log in to the Console.
• Install Microsoft .NET Framework (version 4.0 or higher) on the proxy server that is a 64-bit computer.

  Note: Do not install Microsoft .NET Framework if you are using a Windows 2012 or 2012 R2 computer as a proxy server.

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