Can I Change the Specifications Defined by a Private Image When I Use the Image to Create an ECS?

Yes. You can specify the CPU, memory, bandwidth, system and data disks of the ECS you are creating. The system disk must be smaller than 1,024 GB but no less than the system disk capacity in the image.

When you use a full-ECS image to create an ECS, the system and data disk information defaulted by the image will be automatically displayed. You can increase the capacity of a system disk or data disks, but cannot decrease it.

For details, see Creating an ECS from an Image.