All VM sizes are not showing while resizing the VM in Azure

Question

All VM sizes are not showing while resizing the VM in Azure,

I am using Windows (Windows Server 2022 Datacenter) OS and current size is Standard B2s v2 (2 vcpus, 8 GiB memory). I want to resize this VM from current size to B4MS but when I am resizing, it is only showing 202VM sizes. But not showing complete B-series. Currently my VM is running in East US2 location.

Answer 1

If your VM is still running and you don't see the size you want in the list, stopping the virtual machine may reveal more sizes.

Answer 2

Hi Abhi Sahu,

As per my understanding, you cannot resize your VM from B2s_v2 to B4ms because of the underlying hardware differences and restrictions in Azure VM resizing. Azure does not allow resizing between VMs with resource disk and non-resource disk hardware. You can see in the below images that B2s_v2 does not have a Local storage and B4ms has Local storage of 32GiB. For more information, you can refer to this https://learn.microsoft.com/en-us/azure/virtual-machines/azure-vms-no-temp-disk#can-i-resize-a-vm-size-that-has-a-local-temp-disk-to-a-vm-size-with-no-local-temp-disk

If you want to switch to Standard_B4ms, you need to redeploy the VM: Deallocate and Detach the OS Disk and Create a New VM with B4ms. Then attach the old disk to the New VM.
Alternatively, you can try this. If you want to avoid redeployment, you can resize to a compatible B-Series v2 size which has same vCPUs and RAM equal to B4ms.

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