I've had the same experience as Joshua here.  I'm not running any extremely
heavy I/O stuff, but we didn't even notice the hiccup when I did the clumsy
janitor simulation (unplugged an ESX host).  I'm not running anything crazy
like a heavy duty commerce site though.

On Fri, Jun 19, 2009 at 3:50 PM, Joshua Nichols <
[email protected]> wrote:

> On Jun 19, 2009, at 3:43 PM, [email protected] wrote:
> > my big problem with live migration (especially as a disaster
> > recovery 'solution') is that if the running machine dies it's too
> > late to do a live migration. If the application is important enough
> > to need failover and disaster recovery I need it to be able to
> > survive a system just disappearing, and so I need it to be able to
> > recover on the new machine without having the old machine available
> > to migrate from, and if I have that anyway, why not use that instead
> > of live migration?
>
> I'm pretty sure vMotion works just fine even if the first host loses
> power suddenly.  We've lab tested a wide variety of "very bad"
> scenarios, and each time it migrated the machine efficiently enough
> that ping tests to the VM itself didn't even drop packets.  (Delayed,
> sure, but...)
>
>
> --joshua.
>
>
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