RedHat indicates that the Hypervisor is free of charge.

Article Title: RedHat indicates that Hypervisor is free of charge. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

Paul Cormier, president of Red Hat products and technology, said the company is developing a core-level hypervisor developed by KVM (the technology just acquired by Qumranet. This provides better performance and power management for new hardware that has been virtualized and optimized.

However, Red Hat will continue to support the Xen hypervisor in the Red Hat Enterprise Linux 5 (RHEL 5) Operating System in 2013.

"KVM is highly accepted in the Linux community," Cormier said. "This virtual technology can be implemented in all Linux versions. But Xen's decision is still correct ." He said. "We are still the top contributor to the Xen program ."

Both Xen and VMware are pre-production products and must be implemented on Intel x86 hardware, without virtual optimization. "VMWare and Xen must do a lot of things, which has an impact on performance ."

Therefore, the current virtual deployment is only used on 10% of servers, most of which are used for testing and development. Most users find that, due to the lack of optimization, performance and power consumption cannot be applied to large-scale productivity servers.

The market estimates that virtualization will expand to 90% of servers in the next five years. Therefore, it must be able to control hardware, and the KVM role also plays a role here because it is at the core (kernel ), you can also use the virtualization extension instruction sets provided by Intel and AMD on newer processors.

"Xen was originally virtualized with old hardware, but KVM was designed with new hardware ." Brian Steven S, Technical Director of Red Hat, said. Using these two hypervisor at the same time does not cause problems, because Red Hat has developed an API called Libvirt.

Red Hat said it was not worried about Microsoft's virtual technology promotion. The company said Microsoft provided Hyper-V products in an almost free way only to combat VMware products. "Microsoft has targeted VMware for competition ." Cormier.