On the DCS console, after creating a DCS instance, you can modify the security group of the DCS instance on the instance's Basic Information page.
You can modify the security groups of DCS Redis 3.0 instances but cannot modify those of DCS Redis 4.0 or 5.0 instances.
At least one DCS instance has been created.
Only the security groups that have been created can be selected from the drop-down list. If you need to create a security group, follow the procedure described Security Group Configurations.
The modification will take effect immediately, that is, the new maintenance time window will appear on the Basic Information tab page immediately.