You have a couple of VMs of 4 Core and 16GB. You need to upgrade VMs to 8 Core and 32 GB Ram since they are not performing well. So, what are the steps you will take?
You will go to specific VMs and perform the below steps.
First, take approval from the Application Owner for downtime because it will automatically reboot the VM.
Go to each VM and Click on the Size
Select the VM instance Size of 8 core 32 GB Ram VMs.
Once you will select the specific Size, it will automatically start upgrading the instance.
After that, you need to verify all the settings of the VMs and hand them over to the application Owner if the activity completed successfully.