What are the pros and cons of Virtuozzo vs KVM?

Maxoq

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#1
Can anyone help explain the pro's and con's between Virtuozzo and KVM? I've heard that KVM may be slightly better in terms of RAM Usage and performance but I'm not certain. I am using VPS, but I could not check my provider is using Virtuozzo or KVM. How to check that and which one is better? why?
 
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#2
I think you are referring to Virtuozzo Containers. The official site of Virtuozzo claims it be better than KVM solution and have experimented with CentOS 7 KVM which was able to handle 130 servers simultaneously where as Virtuozzo Containersâ„¢ ran more than 200 servers with the identical performance.
 

VirtuBox

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#3
Can anyone help explain the pro's and con's between Virtuozzo and KVM? I've heard that KVM may be slightly better in terms of RAM Usage and performance but I'm not certain. I am using VPS, but I could not check my provider is using Virtuozzo or KVM. How to check that and which one is better? why?
Virtuozzo -> OpenVZ containers
KVM -> Full virtualization

You can read this post to learn more about the difference : https://forumweb.hosting/13141-xen-vs-openvz.html?p=80244#post80244
 
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#4
While KVM is hardware virtualization, Virtuozzo is container based. Containers are usually recommended for web based applications and you can easily create lots of containers compared to Virtual Machines. Choosing between KVM and Containers should be purely based on your business requirement. Also look for Docker if you are interested in Containers.
 
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#5
With Virtuoso/OpenvZ it's easy to oversell, with KVM also you can oversell, but you can only oversell CPU or RAM not disk space, with virtuoso you can even oversell Disk Space

I personally prefer KVM, even clients prefer KVM as long as they are aware of the technology, if you give your client choice between KVM and VZ most of them will be select KVM over VZ
 
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#7
These are some of the few differences I know of from my research but as I always say, it all depends on the user's preferences in choosing.

OpenVZ can ONLY host Linux operating systems
KVM is more flexible and can host Linux, Windows, and custom OS options.

OpenVZ allows complete sharing of resources meaning once you have hit your allocated RAM provided to you by the host, the remaining RAM becomes a free-for-all for users on the server. This is not a problem if you run small applications, but you may be in trouble if you are running something more resource intensive.
KVM allows you to set maximum and minimum values to your resources, so that you only use the resources your applications need.100% of the RAM and disk resources are dedicated to one individual user.

OpenVZ servers are of a cheaper cost than KVM servers.

OpenVZ provides the user with fast speeds and scalability, and it's more affordable.
KVM offers private virtualized hardware including network card, disk and graphics adapter, and guaranteed resources for increased reliability and customizability. KVM packages are ideal for serious resellers, game servers, small businesses, and medium-sized enterprises.

I hope this information is of help to you.
 
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