Why can't I resize VM from Standard_D2s_v4 to Standard_B2ms

Question

Hi

I have a VM with size Standard_D2s_v4 and would like to resize it to Standard_B2ms.

However this size is not offered. I attempted via portal and also via the "az vm list-vm-resize-options ... " command. Only D- d E-tier VMs are offered.

Why is that?

Thank you
Vasil

Answer 1

Hi,

A logical explanation could be that D2s_v4 support for Temp storage "Remote Storage Only" since the B2ms doesn't.

Create an image of the VM, delete it, and create a new B2MS-sized VM from the image. That will solve your issue.

Answer 2

Thanks! Now I figured it out.

The relevant documentation is this one:
https://learn.microsoft.com/en-us/azure/virtual-machines/azure-vms-no-temp-disk

The D2s_v4 -> B2ms migration falls into the category "VM without temp storage" to "VM витх temp storage" which is not possible automatically.

Answer 3

I'm trying to do the same, resize from d2s_v4 to B2ms. How did you endup doing this resize if its not possible automatically?