Currently, you can create a maximum of 100 private images under an account in a region.
No. You can create an image from a running ECS. However, if data is written to the ECS during image creation, that new data will not be included in the created image.
Log in to the management console. Choose Compute > Image Management Service and click the Private Images tab. Monitor the image creation progress in the Status column.
The image creation involves the installation of Xen and KVM drivers, OS kernel loading, and GRUB boot configuration, which may take a long time. In addition, the network speed, image file type, and disk size have an impact on how long image creation takes.