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Re: [Xen-users] Operative system supported in virtual machines by Xen 3

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Subject: Re: [Xen-users] Operative system supported in virtual machines by Xen 3
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Wed, 30 May 2007 16:32:54 +0100
Cc: nicola <nicola.calligaris@xxxxxxxx>
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> my question is: which operative systems in the virtual machines are
> supported by Xen 3.0 ?

If your hardware has virtualisation support (Intel's VT-x or AMD-V) then you 
can probably run all the operating systems you list.  If you don't, then 
you're limited to paravirtualised guests (i.e. just the Linux guests, not 

> For example: can I have a Fedora Core 6 with Xen 3.0 and create 3
> virtual machine whith Windows Server 2003, RedHat ES5 and Ubuntu
> respectively installed for production enviroenment?

I'm not sure what Xen version FC6 ships.  I think it might be 3.0.3, which was 
a little lacking in HVM (full virtualisation) support.  Installing 3.0.4, or 
maybe 3.1 would get you better HVM support and might make it smoother trying 
to run the Windows guest.

Redhat ES5 and Ubuntu can then be configured to run paravirtualised on this 
host, with Windows running in an HVM domain.  HVM support for Windows in 
general has come along quite nicely but I'm not sure if 2003 is "officially" 

I've had no stability trouble running Win XP (I've had some issues with Vista 
but that may not be all Xen's fault).  It's not especially fast, but it 
serves my needs well.  The only problem I've had is that after upgrading to a 
xen-unstable snapshot Windows decided that my virtual hardware had changed 
and now wants to be reactivated :-(

You'll want to do your own production-readiness evaluation, but from what I 
understand, Xen looks like it may well serve your needs.  The XenSource Xen 
products also supply accelerated disk / net drivers for Windows - you could 
try XenExpress as a cost-free example of what this is like (and I believe you 
can upgrade that seamlessly to XenServer / XenEnterprise by buying a license 


Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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