another way to copy VM image to another storage account
the storage account has a limit with storage I/O (20000) ,so we can't create too many VMs in one storage accouht. but we found if we deploy the VM with custom image we can't find a easy way to copy a image with data disk. we can only copy all VHD to another storage account and create new image from OSdisk .then create a vm and attach datadisk, at last, we need to recapture new image.
we think it should find a new way to copy the image instead of copy the VHD because the new VHD is just a new blob.