The SharePoint agent supports restore of full and differential backups. As with SharePoint backups, the agent leverages STSADM or PowerShell (SharePoint 2013 and higher ) to perform restore operations. Restores occur in two phases. First, backups are unfolded to a local backup system share (/backups/rae/<client_name>/<instance>). In the second phase, the agent invokes STSADM or PowerShell commands to restore back to the SharePoint clients.
SharePoint restore considerations
To restore SharePoint items from backup
To restore the entire farm from backup
SharePoint share is unavailable