I plan to upgrade the size of 4 of our Azure VM's from an A3 configuration to A4. I am unable to find any information if this will affect the live server in any way. I have no idea if doing this will affect our data, DNS/Network, take the server offline, downtime, etc..
From the configuration panel, it's a simple dropdown to upgrade the configuration, so it appears it will be an instant and non-impacting upgrade, but I've never done this before.
Can anyone help me out with this?