CloudTest and Amazon EC2 Instances
CloudTest uses Hardware Virtual Machine (HVM) instead of Paravirtual (PV) across the board for Amazon Machine Images (AMI). This applies to Grids, Results Databases, and Environments. HVM is the new generation of virtualization technology offered by Amazon. More detail about HVM technology can be found in the Amazon EC user guide's Virtualization Types article.
The translation of CloudTest server sizes to Amazon EC2 instance types is as follows:
| CloudTest | Amazon EC2 |
| Large | CloudTest 52 and earlier: m1.large |
| CloudTest 53: m3.largeCloudTest 58: m4.large | |
| Extra-Large | CloudTest 52 and earlier: m1.xlarge |
| CloudTest 53: m3.xlarge CloudTest 58: m4.xlarge | |
| High-CPU Extra Large | CloudTest 52 and earlier: c1.xlarge |
| CloudTest 53: c3.xlarge CloudTest 58: c4.xlarge | |
| High-CPU Double Extra Large | CloudTest 52 and earlier: N/A |
| CloudTest 53: c3.2xlarge CloudTest 58: c4.2xlarge | |
| High-CPU Quadruple Extra Large | CloudTest 52 and earlier: N/A |
| CloudTest 53: c3.2xlarge CloudTest 58: c4.2xlarge | |
| High-CPU Eight Extra Large | CloudTest 52 and earlier: N/A |
| CloudTest 53: c3.8xlarge CloudTest 58: c4.8xlarge | |
| High-Memory Extra Large | CloudTest 52 and earlier: m2.xlarge |
| CloudTest 53: r3.xlarge CloudTest 58: r4.xlarge | |
| High-Memory Double Extra Large | CloudTest 52 and earlier: m2.2xlarge |
| CloudTest 53: r3.2xlarge CloudTest 58: r4.2xlarge | |
| High-Memory Quadruple Extra Large | CloudTest 52 and earlier: m2.4xlarge |
| CloudTest 53: r3.4xlarge CloudTest 58: r4.4xlarge | |
| High-Memory Eight Extra Large | CloudTest 52 and earlier: N/A |
| CloudTest 57: r3.8xlarge CloudTest 58: r4.8xlarge |