CentOS virt - Jul 2010 - which virtualization platform to choose

Friends
I'm in doubt here: which virtualization platform to choose and why?

If I have just installed a VM I choose Xen or KVM?
And when I have more than 5 or 10 VM's?

Please, I need your help to choose right.

Thanks
-- 
Gilberto Nunes

On Mon, Jul 26, 2010 at 1:30 PM, Gilberto Nunes
<gilberto.nunes32 at gmail.com> wrote:
> Friends
> I'm in doubt here: which virtualization platform to choose and why?
>
> If I have just installed a VM I choose Xen or KVM?
> And when I have more than 5 or 10 VM's?
>
> Please, I need your help to choose right.
>
> Thanks
> --
> Gilberto Nunes
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> http://lists.centos.org/mailman/listinfo/centos-virt
>
It depends on which clients are you going to virtualize, personally I
like using KVM for the simplicity to run Windows and Linux guests.

-- 
Linux User #452368
http://twitter.com/vpadro

"Everything that irritates us about others can lead us to an
understanding of ourselves"

KVM seems to have a future in centos. 

I have a couple of servers running kvm, with only 4 cores per server. I tend
use 1 real core for each virtual cpu assigned to the guests, because I don't
need that many guests. So, I can't speak to scaling...

Performance is excellent, however. It's been a year or more since I've
tried
ESXi or xen on ubuntu, but I was always disappointed in the speed at which
the guests ran. 

That's why I turned to xenserver for its speed and GUI, and then to KVM for
its speed and complete control over things like nics and network
configurations.

KVM works great

On Mon, Jul 26, 2010 at 03:30:38PM -0300, Gilberto Nunes
wrote:
> Friends
> I'm in doubt here: which virtualization platform to choose and why?
> 
> If I have just installed a VM I choose Xen or KVM?
> And when I have more than 5 or 10 VM's?
> 
> Please, I need your help to choose right.
> 
It depends on many things.

If your hardware doesn't have CPU virtualization extensions,
then you only have one choice - Xen.

If you want to use 32bit host OS, then you only have one choice - Xen.

And if you run mainly Linux VMs then Xen is a good choice.

-- Pasi