You can delete manual backups to release storage space.
Deleted manual backups cannot be recovered. Exercise caution when performing this operation.
Procedure
Log in to the management console.
Click in the upper left corner and select a region and a project.
Click Service List. Under Databases, click GaussDB(for MySQL).
In the navigation pane on the left, choose Backups. On the displayed page, locate the manual backup to be deleted and click Delete in the Operation column.