Articles tagged: Amazon Machine Image (AMI)

Bake HVM AMIs

Bake HVM AMIs

Just a quick note to let you all know the Bakery can now build Hardware Virtual Machine (HVM) Amazon Machine Images as Paravirtual (PV) AMIs.

Why is this important? Because all second generation AWS instance types support HVM, while only a subset support PV. The T2 instance class for example only support HVM, and who doesn't want to play the CPU Credits game.

To create an HVM AMI, start with an HVM Base AMI, and remember to change the virtualization type when creating (or updating) a pipeline to HVM. Just changing the flag without changing the Base AMI will ...


Paravirtual vs HVM images

Paravirtual vs HVM images

Once upon a time, about last Monday, I thought PV AMIs were "the thing". Then I noticed the AWS Web Console had moved the HVM Amazon Linux AMI to the top of the list. I did a little more digging, and found that every 2nd generation instance type can use HVM, but only a subset can use PV. This is the opposite of the 1st generation instances.

Intrigued, I started asking around but no one could say for certain what the future held. So, since I was paying for Business Support anyway, I though I'd ask them. The response ...