On March 24th we shared in an announcement in the M365 message center (MC207439) details around temporary adjustments we are making to select capabilities in SharePoint Online and OneDrive.
During these unprecedented times, we are taking steps to ensure that SharePoint Online and OneDrive services remain available and reliable for your users who depend on the service more than ever in remote work scenarios.
Note: These temporary feature adjustments may be in place during business hours in your tenant's region.
Content migration, Data Loss Prevention (DLP), and backup solutions
Many SharePoint Online and OneDrive customers run business-critical applications against the service that run in the background. These include content migration, Data Loss Prevention (DLP), apps that scan the service and backup solutions. In support of the objective to remain highly available, we are moving some operations to regional evening and weekend hours.
Users may observe:
Migration, DLP and backup solutions may achieve limited throughput during regional weekday daytime hours. During evening and weekend hours for the region, the service will be ready to process a significantly higher volumeof requests from background apps.
Please review the relevant best practice guidance, which describes how to get maximize throughput.