.. _Introduction:

Introduction
============

This guide describes how to upgrade

-  Virtuozzo 6 to Virtuozzo 7 in both local storage and Virtuozzo Storage scenarios,

-  OpenVZ 7 to Virtuozzo 7.

When upgrading Virtuozzo 6, you can

1. upgrade Virtuozzo 6 servers by using temporary spare Virtuozzo 6 servers,

2. migrate VMs and containers from Virtuozzo 6 servers to new Virtuozzo 7 servers,

3. upgrade Virtuozzo 6 servers in-place if certain requirements are met.

The exact steps to perform differ depending on scenario and are described further in the guide.

.. note::

    1. This guide refers to other Virtuozzo documentation that you will need to complete the upgrade: *Virtuozzo 6 User’s Guide*, *Virtuozzo 6 Upgrade Guide*, *Virtuozzo 7 Installation Guide*.

    2. You can upgrade to Virtuozzo 7 from Virtuozzo 6 and OpenVZ 7 only. If your servers run older virtualization products, you will first need to upgrade them to Virtuozzo 6 or OpenVZ 7, respectively. For instructions, see the *Virtuozzo 6 Upgrade Guide* or OpenVZ documentation.

