[Ulitka]

Может быть в OpenVZ (этот проект, кстати, поддерживается теми же swsoft) все устроено не так как в коммерческой реализации Virtuozzo... Я встречал как минимум несколько различных версий linux (в виде templates) которые могут работать одновременно на одном физическом сервере. SUSE, FC4, Debian, RHEL, CentOS.

Вот тут один из файлов официальной документации на Virtuozzo, посмотрите, это интересно:
http://ulitka.com/linux-server/VzLin...ingStarted.pdf

Virtuozzo is a complete server automation and virtualization solution based on a patent-pending
technology developed by SWsoft. Virtuozzo creates multiple isolated Virtual Private Servers
(VPSs) on a single physical server to share hardware, licenses, and management effort with
maximum efficiency. Each VPS performs and executes exactly like a stand-alone server for its
users and applications as it can be rebooted independently and has its own root access, users, IP
addresses, memory, processes, files, applications, system libraries, and configuration files. Light
overhead and efficient design of Virtuozzo makes it the right virtualization choice for
production servers with live applications and real-life data.


However, at this point you are not yet able to create Virtual Private Servers. A Virtual Private
Server is functionally identical to an isolated standalone server, having its own IP addresses,
processes, files, users, its own configuration files, its own applications, system libraries, and so
on. Virtual private servers share the same Hardware Node and the same OS kernel. However,
they are isolated from each other. A Virtual Private Server is a kind of ‘sandbox’ for processes
and users. Different Virtual Private Servers can run different versions of Linux (for example, SuSE 9.3 or
Fedora Core 4 and many others). Each VPS can run its own version of Linux. In this case we
say that a VPS is based on a certain OS template. OS templates are RPM packages shipped with
Virtuozzo 3.0. Before you are able to create a Virtual Private Server, you should install the
corresponding OS template in Virtuozzo. This is displayed as Virtuozzo Templates in the
scheme above.