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In Amazon Web Services (or AWS) EC2; compute instances can be upgraded/downgraded when stopped. However, I'd like to know which instance types are available even when the instance is running, even if I have to stop it to do the upgrade/downgrade. So, is there an API or console interface that will tell me what instance types are available upgrade/downgrade for an instance while its running?

Aslan Brooke
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No. You cannot upgrade ANY instance while it is running. When upgrade your instance, it is most likely run in a different hardware. So without stopping the instance it is impossible to move our instance to a different physical machine. There is no such thing like vMotion in AWS.

I see update to the question. There is no matrix for instance upgrade. There are many factors that affect this:

  • Virtualization (PV or HVM)
  • Network (EC2 classic or EC2 VPC)
  • Platform (32bit or 64 bit)

Take a look at: Resizing Your Instance

helloV
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  • Apologies, I updated the title to better reflect the question, I'd like to know what types could be upgraded to if I stopped the instance. But, know that before stopping. – Aslan Brooke Mar 08 '16 at 21:51