We performed a comparison between KVM and RHEV based on our users’ reviews in four categories. After reading the collected data, you can find our conclusion below.
Comparison Results: KVM wins out in this comparison. Users find it very fast and super easy to use and manage. It provides excellent security and scales easily. Many users feel RHEV is lacking in some documentation capabilities and security features and that it can be challenging to scale up when needed.
"The most valuable feature is hypervisor. I can host at the same time different operating systems in Linux Windows."
"This solution is open source and easy to configure."
"If you prefer command-line, there are all kinds of command-line options."
"The most valuable feature of KVM is its stability."
"I think nine out of the ten supercomputers in the world use Linux KVM, so I think that attests to the fact that it is a scalable product."
"Scaling the solution is easy. You just have to add more hardware."
"KVM has a rich options set which can be directly used or via wrappers, such as libvirt."
"The initial setup was very easy."
"The solution is stable."
"It's a scalable solution."
"Red Hat is the most stable system."
"The initial setup is fairly straightforward and well-documented. The process is very similar to its competitors. The success of your setup depends on how well you plan."
"It is a stable solution...It is a scalable solution."
"Technically, the main reason why I'm using Red Hat is because of its stability."
"The most valuable feature of Red Hat Enterprise Virtualization is its pricing."
"What they provide is way beyond the essential requirements of customers."
"KVM is very difficult to manage and run on daily operations."
"The virtual manager and the graphical QEMU for KVM need some improvement."
"Lacks high availability across clusters as well as support for Apache CloudStack."
"The main drawback in the solution is probably disaster recovery."
"We are not getting good support from KVM, and it is not that user-friendly."
"The only negative aspect of needing hardware support is a fully functional KVM can be dropped. It would be nice if the support for other platforms, like ARM or Risk, were as good as the x86 one. However, with the democratization of Chromebooks based on these chips and mobile devices, it will not take long for that to happen."
"Its resource usage can be improved."
"Some things are pretty basic, and they could be more robust with more detail."
"With RHEV, the cyberattacks should be fewer. I want RHEV to be better protected."
"We would like the dashboard feature of this solution to be improved, as it is not very detailed at present."
"The support is tricky in a few places. We're facing some challenges within Malaysia where we don't really have the system integrators available who can provide extended support. When we need personnel on-site, we can't get them."
"The biggest improvement would be more third-party direct support for things like backups and provisioning through third-party portals."
"A few features of the product do not work as well as those in VMware."
"Configuring the network interfaces is much better in Ubuntu and should be improved."
"I heard that there are big differences between Red Hat eight and seven, but it's still quite difficult for me to judge it. I found it a bit more difficult to manage than version seven, which was much easier. In term of features, though, it is still not yet clear which is better. I have no clear idea of which features need to be changed at the moment."
"The solution could use network virtualization."
KVM is ranked 4th in Server Virtualization Software with 39 reviews while RHEV is ranked 10th in Server Virtualization Software with 32 reviews. KVM is rated 8.0, while RHEV is rated 7.6. The top reviewer of KVM writes "Delivers good performance because of kernel-based virtualization". On the other hand, the top reviewer of RHEV writes "Offers frameworks with well-documented API and easy to use". KVM is most compared with Proxmox VE, Oracle VM VirtualBox, Hyper-V, VMware vSphere and Citrix Hypervisor, whereas RHEV is most compared with VMware vSphere, Proxmox VE, Hyper-V, Oracle VM and Nutanix AHV Virtualization. See our KVM vs. RHEV report.
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