Azure: Cannot Configure a VM Size beyond A0-A4

6
votes

I am attempting to increase the size of a Virtual Machine on my Azure subscription from an A2 (2 cores, 3.5GB) machine to a D3 (4 cores, 14GB) machine. The only options available for this particular VM on the configure tab > Virtual machine size are: - A0 - A1 - A2 - A3 - A4

I do not see an A5 or a D3 virtual machine size available - although these are available for other virtual machines within my subscription. We have had this and a couple of other VMs with the same issue running for about a year and a half - the newer VMs in our subscription (as well as machines in the create gallery) can all be scaled into the memory and CPU intensive versions (A5 or D3, D4).

Is there any pathway that will allow me to upgrade this older VM to a newer specification of Virtual Machine?

2
azureconfigureazure-virtual-machine
Do you have the "VIRTUAL MACHINE TIER" (BASIC|STANDARD) switch on the "CONFIGURE" tab? – b2zw2a
I'm running into the same issue, in the portal it says "This pricing tier is not available in the selected virtual machine's domain name" even though all I want to do is upgrade to an A5 – Ryan
It looks like I'm magically able to select A5 instance now... EDIT: nevermind I was able to select it on the portal UI but it failed – Ryan
I do in fact have the orginal VM set up in the STANDARD bracket - it looks like Micah's answer below is spot-on. The machine was created before April 16, 2013. Strangely enough, when I went to look back at the settings on the machine - the full set is now available. I now have options from A0 to D14. Happy Days! (Something must have happened in the background)! – David Hobson

2 Answers

3
votes

According to the Azure MSDN article "Virtual Machine and Cloud Service Sizes for Azure" at: http://msdn.microsoft.com/en-us/library/azure/dn197896.aspx You can't increase the size of a "Basic Tier" VM to larger than A4. So, it looks like you will need to use the "Standard Tier" instead.

If the option to switch to the "Standard Tier" is not available for this VM, the explanation may be that VMs created before "April 16, 2013" may not be able to be upgraded to larger than A4 because of the older datacenter in which they reside. The article includes an explanation of this issue and link to a troubleshooting guide for workarounds for the "Error: “Failed to configure virtual machine” with A5, A6 or A7 VM size" at: https://social.msdn.microsoft.com/Forums/azure/en-US/9693f56c-fcd3-4d42-850e-5e3b56c7d6be/error-failed-to-configure-virtual-machine-with-a5-a6-or-a7-vm-size?forum=WAVirtualMachinesforWindows

0
votes

This blog article visualizes changeable VM sizes in tables. Note that the blog information could be old, but it shows that there are VM sizes not changeable even though it is selectable on the list.

From the blog, below table gives an answer.

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Note that above one is "ASM" while below is "ARM".

Changing VM size is strongly (or we can say definitely) depended on the Azure infrastructure, so the only way to resolve the issue is just to create new VM.