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AWS and High-CPU Instances

July 04, 2011 at 09:52 AM | categories: Performance, AWS, Linux | View Comments

When AWS EC2 tells you that "requested instance type (cc1.4xlarge) is not supported in your requested Availability Zone (us-east-1b)", what they really mean is that you are using the wrong AMI. Switch to an HVM AMI. This enables support within Xen for Hardware Virtual Machine (HVM), using AMD SVM or Intel VT-x instructions.

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