Increasing the size/resources of a VM in your own environment is usually pretty straightforward. You’ll know whether or not you can hot-add resources; if you have to reboot the machine or not, etc. and it’s probably a familiar interface such as VMWare, Hyper-V, or a KVM or similar hypervisors.

I know that my first time resizing a VM in Azure, I had some questions that I couldn’t exactly look up. I basically just wanted to see the process through before I performed the re-sizing in production.

The main reason I am putting together this short guide is so that people like myself can see what happens when you upgrade a VM in azure.


1. Open your VM in Azure Portal

  • Select “size” from the settings list, pictured below.

2. Select your new size.

  • Below I have a DS12_V2 Standard Azure VM which I will be upgrading.


  • My task in this situation was to double the RAM and CPU for a Remote Desktop Session Host, so I selected DS13_V2 Standard to upgrade to.

  • Hit select, and your VM will begin resizing.

NOTICE: The server must reboot to resize! Don’t do this unless your server is in a state where it can be restarted.

You’ll see a notification in your Azure portal while the VM is resizing/rebooting:

4. Success!

  • The Azure Portal indicates that the VM was resized successfully.

  • Here is the Session Host after resizing.


In summary, resizing a VM in Azure is really straightforward.

I hope this helps anyone who reads.


Jefferson · January 10, 2018 at 6:15 am

I want to re-size my ram from 14GB to 28 GB so my concern is if I resize the Ram will it affect the data.
We have SQL Server 2016 installed with more than 4 database containing more than 10GB of records.

Please suggest me if I can resize with out any error?

    Tyler Woods · January 12, 2018 at 1:51 pm

    You shouldn’t have an issue at all with data loss because the disks are stored independently of your virtual machine definitions. I am not able to speak 100% for your environment and your scenario but in general, sizing up a VM won’t have any negative impact especially with persistent storage.

DC in TX · November 11, 2017 at 7:27 pm

Handy and useful, but what about disks? I notice you went from 8 disks to 16. Where/how do they show up?

    Tyler Woods · November 15, 2017 at 2:18 pm

    That’s a great question! The client I was upgrading this for is still using it in production, however the “data disks” are not what they were after. I honestly have zero experience with those and have no idea what to do with them, however, I can browse through the portal and check it out if you are still curious at all?

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