Question posted in 
I am planning to run cPanel/WHM on EC2.
I see the different packages that exist.
My question is: Can I upgrade my server resources anytime based on increasements in my demands?
For example: if my current package is “t2.large” can I in the future upgrade the server resources to “m4.2xlarge” or more without any change or effects on my data?
How does it work?
I mostly run out CPU on every server I create. So that I have to buy a new server which involves lots extra expenses such as cPanel/WHM licenses, etc.
I am looking for a service that I can increase/upgrade server resources such as CPU (most important), RAM, Diskspace.
Thank you in advance for your replies.
2
Answers
You can resize your instance anytime you want, but you have to stop your instance to resize it. AWS will choose a new physical hardware based on your new instance type. There are some restrictions on what instance type you can upgrade to depending on virtualization type, region etc., For more information:
Resizing Your Instance
Amazon EC2 does not have pricing packages. It is a pay-as-you-go service, where you are charged for whatever you consume. If you turn off a service, you are no longer charged for it.
You can change the size of an Amazon EC2 instance at any time. Simply stop it, change the Instance Type, then start it again. It’s just like rebooting a computer. The instance is charged on an hourly basis, so you’ll be charged a different hourly rate after you start it again.
If you wish to lock-in a discounted rate (once you know the size of instance you desire), you can purchase an Amazon EC2 Reserved Instance. Despite the name, it is mostly a pricing discount. You pay up-front annually or monthly and receive a discounted charge.
Alternatively, you could use Amazon Lightsail, which does offer a package consisting of an Instance Type, disk storage and network bandwidth. This is good if you just require a simple machine without the need for complex configuration.