问题
I have a virtual machine in the cloud at Microsoft Azure. Currently I have a premium storage subscription. I want to downgrade this subscription to a cheaper storage solution while leaving the virtual machine intact. Would this be possible?
回答1:
What you're trying to do is not supported today. Changing from Premium to Standard is not possible today.
What you have to do is copy the VHD from your Premium storage account to a new or existing Standard storage account and create a new Virtual Machine using that.
UPDATE
Can I copy my installed software in that case as well?
Yes, when you copy your VHD all your installed software gets copied as well. So essentially you need not re-install your software in the new VM provided you created the VM by copying the VHD from one storage account to another.
来源：https://stackoverflow.com/questions/37807583/is-it-possible-to-downgrade-a-premium-storage-subscription-while-keeping-azure-v