[Samba] Samba4 - multiple forest hosting?

[Chris Weiss]

On Thu, Oct 18, 2012 at 3:40 PM, Harsh Shah <harshwshah at gmail.com> wrote:
> Can I configure Samba4 in such a way that I have two separate **forests**
> on a single machine– let’s say one for CompanyA and other for companyB?
>
> So essentially does Samba4 support multiple server instances like Samba3 as
> described here http://wiki.samba.org/index.php/Multiple_Server_Instances?

I don't know the answer, but I'm curious why one would want this
anymore versus using a virtual machine (vmware, xen, kvm) or container
(openvz, xen paravirt)?