On the DCS console, after creating a DCS instance, you can modify the maintenance time window of the DCS instance on the instance's Basic Information page.
At least one DCS instance has been created.
in the upper left corner and select a region and a project.
icon next to the Maintenance parameter.
to save the modification or
to discard the modification.The modification will take effect immediately, that is, the new maintenance time window will appear on the Basic Information tab page immediately.