Compare KVM vs. XenServer

KVM is ranked 2nd in Server Virtualization Software with 10 reviews while XenServer is ranked 6th in Server Virtualization Software with 15 reviews. KVM is rated 8.2, while XenServer is rated 8.4. The top reviewer of KVM writes "Good performance, but better management features and integration are needed". On the other hand, the top reviewer of XenServer writes "The ability to move a VM while it is still running and continue doing maintenance work is a big advantage". KVM is most compared with Oracle VM VirtualBox, Hyper-V and VMware vSphere, whereas XenServer is most compared with Proxmox VE, KVM and Hyper-V. See our KVM vs. XenServer report.
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KVM Logo
Read 10 KVM reviews.
74,304 views|67,843 comparisons
XenServer Logo
29,889 views|27,148 comparisons
Most Helpful Review
MahdiBahmani
Find out what your peers are saying about KVM vs. XenServer and other solutions. Updated: January 2020.
397,408 professionals have used our research since 2012.
Quotes From Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros
The KVM service is well managed with a central policy interface.The GUI interface makes the management of KVM easier than ever before.I like that this is an open-source solution. It is very powerful, and it's easy.Scaling the solution is easy. You just have to add more hardware.Our production servers are running in Linux, and this solution supports that environment well.I find the density of the product most valuable. It is density that a technologist can just assign page merging. This is what makes KVM one of the important players of the virtualization market.The initial setup was simple.It is an open ecosystem, and we see there is a benefit in open-source solutions.

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What I like the most is the support of the GPU Graphics and the VM Live migration.The support for this solution is phenomenal.This is a good product for virtualization and it is easy to use.The solution integrates well with other solutions, which makes it really strong as a primary solution to deploy.The solution is easy to deploy. It's very easy to understand problems and read logs.The most valuable feature of the solution is that it is very fast. It also works very well for physically small servers.The ability to move a virtual machine while it is running is a big advantage.The feature I find most valuable, is its performance

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Cons
The initial setup of this solution is more difficult than some of the competing products and it could be improved.Business continuity features need to be added.The virtual manager and the graphical QEMU for KVM need some improvement.The solution should be more user friendly. We are struggling with the command lines.Support for VF is needed, where you can, for example, export from VMware to KVM.The stability of this solution is less than other products in the same category.The KVM tech support is really bad. They are not very responsive.We would like to have a software lifecycle solution included in this solution. We can handle the software needed for KVM, but also the software that we provide. A lifecycle component would be very beneficial.

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Network management needs improvement because it is not very stable.The built-in networking features are a little limited.The product could be faster and licensing options could be improved.The solution is too expensive and people are kind of moving away from Citrix. It's starting to become a problem. It is a primary reason that while we are rebuilding we're going to seek out open-source solutions.The solution would benefit from faster technical support.The USB support for the virtual server needs improvement.It needs to have a more robust backup solution.I think the technical support could be better.

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Pricing and Cost Advice
This solution is an open-source, free platform with paid support.This solution came with the Linux license.It is cheaper than other solutions out there on the market.It is cheaper than other competitors like VMware or Hyper-V.​It is free and can be run from your laptop, if needed, unlike VMware.​

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This solution is open source, it's free.We migrated from VMware to XenCenter to cut costs.While it is free for small networks, the pricing is high if your network grows past a certain size.The licensing is straight forward based on usage and features.There are free and paid versions. The free version is limited in features but not by time limit. The paid version has more features.The most valuable feature is the cost; it is a free product.To subscribe to the paid version with support, it is approximately $6,000 per year.The pricing and licensing is so important. Customers do consider the price seriously.

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report
Use our free recommendation engine to learn which Server Virtualization Software solutions are best for your needs.
397,408 professionals have used our research since 2012.
Ranking
Views
74,304
Comparisons
67,843
Reviews
10
Average Words per Review
365
Avg. Rating
8.1
Views
29,889
Comparisons
27,148
Reviews
14
Average Words per Review
367
Avg. Rating
8.4
Top Comparisons
Compared 38% of the time.
Compared 22% of the time.
Compared 14% of the time.
Compared 57% of the time.
Compared 16% of the time.
Compared 9% of the time.
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KVM
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Citrix
Overview
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko.

Citrix XenServer is an open source virtualization platform that manages server, desktop and cloud virtual infrastructures. XenServer is straightforward and quick to install. Even the most demanding workloads and automated management processes can take just a couple of minutes to virtualize. XenServer lowers IT costs and increases IT agility and flexibility.

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Sample Customers
MediaWiki, Wikimedia Foundation, Wikipedia, Wikivoyage, Wikidata, Wikiversity, Commons U.S. Army Shared Services Center, SoftLayer, Educational Services of America, Independent Bank, and SK Telecom.
Top Industries
VISITORS READING REVIEWS
Software R&D Company36%
Comms Service Provider20%
Media Company9%
Government6%
REVIEWERS
Energy/Utilities Company10%
University10%
Comms Service Provider10%
Non Tech Company10%
VISITORS READING REVIEWS
Comms Service Provider21%
Software R&D Company20%
Government8%
K 12 Educational Company Or School7%
Find out what your peers are saying about KVM vs. XenServer and other solutions. Updated: January 2020.
397,408 professionals have used our research since 2012.
We monitor all Server Virtualization Software reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.