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xen-users
Re: [Xen-users] P2V Migration of Windows
Hi Bill,
On 1/12/07, Bill Denney <denney@xxxxxxxxxxxxxx> wrote:
I'm wanting to migrate some windows boxes P2V, and I was wondering if
there were any tools out there by the Xen community? I found Platespin
and Leostream, and I was wondering if anyone had any experience with
either of them. Are other tools out there that I didn't find?
I don't understand what these p2v tools really do and why one would
use them. I mean, they must do something special but only copying
files - but what?
For sure they can't migrate all running processes of all services
anybody runs on his windows servers seamlessly without interruption.
That is nearly impossible - it's basically what Xen migration is
about. Doing that without an hypervisor, to migrate to a hypervisor?
Hmm.
They could start the new system and try to hand over services like
done in a high availability or load balancing setup, but that would
require massive knowledge and work on the services running - I don't
believe that can be handled by an automatic tool.
Last but not least, why do you want such thing?
When installing a system on a new hardware (basically, starting to run
a system in Xen is from most perspectives of the running system
nothing else than that), a new installation is a good idea, I think.
If you cannot reconstruct your setup easily (e.g. because no
documentation exists and the person who did it isn't available), then
you should take the opportunity to install it newly, but this time
document it so it can be reconstructed the next time - the next crash
is always around the corner - better know you setup before. Using an
Auto-Installer is a good idea for these things - it's at the same time
saving you manual interactions once configured and giving you a
documented system - the installer config is the documentation.
That said, my perspecive could be completely differen, so I'm willing
to learn that it's possible what they promise and what p2v can be
useful for, I just don't get it until somebody can explain it to me!
:)
Henning
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