You can use the Commvault software to back up and restore Microsoft SharePoint Online.
Data You Can Back Up
Lists and list items
Sites and subsites
Pages, permissions, forms, versions, templates, settings, and views
Web parts and customizations
SharePoint Online Office 365 Group site files, which includes the document library
Wiki page library that contains the Team data
Note: You cannot back up apps from the SharePoint Store.
Backups You Can Perform
Forever incremental backups
When You Can Perform Backups
On a schedule: The server plan that you assign manages scheduled backups
On demand: You can perform on-demand backups at any time
Backups You Can Use for Restores
The most recent backup: For example, restore the most recent backup to secondary storage, such as tape, for long-term storage
A backup from a specific date: For example, restore data to a point in time before it became unusable
Backups from a date range: For example, restore data that was accidentally deleted
Destinations You Can Restore To
The current location (in place)
A different SharePoint site (out of place)
You can use either basic or modern authentication to access user data for backups and restores.
Data is retained according to the Office 365 plan that you assign to a site when you add it to the SharePoint Online app in Commvault. The default value for data retention is indefinite. You can modify that value to limit the amount of time that data is retained.