Abstract: In some embodiments, a system for testing performance of a virtualization environment comprises host machines, wherein each of the host machines comprises a hypervisor, one or more user virtual machines (UVMs) and a virtual machine controller, and one or more virtual disks comprising a plurality of storage devices. The one or more virtual disks may be accessible by the virtual machine controllers, and the virtual machine controllers conduct I/O transactions with the one or more virtual disks. The system may receive a specification of a hardware configuration for a host machine and configure the virtualization environment to incorporate the host machine. The system may then select one or more qualification tasks for a test scenario, execute the qualification tasks in the test scenario, and monitor performance of the virtualization environment. The system may then calculate a score assessing how well the hardware configuration may perform in the virtualization environment.