Release a data disk
You can manually release disks that are no longer needed. When a disk is released, all data stored on the disk is deleted. This topic describes how to release a data disk on the Disks page.
Prerequisites
A snapshot is created for the data disk that you want to release to back up disk data. For more information, see Create a Snapshot. The data disk is in the Available state. If the data disk is attached to an instance, you must detach the disk before you can release it. For more information, see Detach a data disk.
Procedure
For detailed instructions on releasing block storage in CRE, please refer to the user manual section -Release Block Storage.