Re: HAL type for Win2003 Server on recent KVM versions?

[Avi Kivity <avi@redhat.com>]

On 11/18/2010 12:58 AM, Kenni Lund wrote:
> Hi
>
> I'm about to move a couple of virtual machines from a Fedora 11 system
> to a new server with a more recent operating system and newer version
> of KVM, etc.
>
> One of the guests is a Windows Server 2003 Standard SP2, which is
> currently running with the "ACPI Multiprocessor PC" HAL.
>
> Considering moving to RHEL, I've been reading the virtualization
> documentation for RHEL 6.0, which says that I need to set HAL to
> "Standard PC" when installing a new Win2003 guest.
>
> Since my current guest has been running perfectly fine for a long time
> with its current HAL, I was wondering if the system will become
> unstable, unbootable or what the disadvantage will be, if I move the
> guest to for example RHEL 6.0, without reinstalling or upgrading the
> guest to select another HAL mode?
>
> On the other hand, it seems like I can "upgrade" from the current
> "ACPI Multiprocessor PC" into "Standard PC", but I'm not sure if I'll
> gain anything by trying this.
>

I suggest using the default HAL, whatever it is.  That's what everyone 
else is using so you get the best tested configuration.

-- 
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