Getting started with backing up SharePoint Online includes completing the Office 365 guided setup—which helps you perform some of the required setup tasks—adding the sites that you want to back up, and performing a test backup and restore.
Important
If possible, perform the getting started process in a test environment. After you perform a test backup and restore, you can move the system into production.
Procedure
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Verify that your environment meets the system requirements for SharePoint Online.