User`s guide

Before beginning the upgrade process, it is important to choose the proper upgrade scenario.

Doing so will help you avoid difficulties you may otherwise encounter and will also ensure you

can successfully solve any problems that may still occur. You can use one of the following

scenarios to upgrade your system:

First Scenario

Typically, you perform a straightforward upgrade of an existing system. Detailed information on

how to upgrade your system using this scenario is provided in the following sections of this

document:

 Upgrading from SWsoft Virtuozzo 3.0 Service Pack 1 (p. 7)

 Upgrading from Parallels Virtuozzo Containers 4.0 (p. 14)

 Upgrading from OpenVZ (p. 28)

Second Scenario

You want to upgrade the Host operating system (Host OS) installed on your server together with

the Parallels Virtuozzo Containers software running on it. In this case, follow these steps:

1 Back up all important Virtuozzo and Container configuration files.

2 Reinstall the Host operating system on the server.

3 Restore the backed up Virtuozzo and Container configuration files.

4 Install Parallels Virtuozzo Containers 4.6 on the server.

Detailed information on this scenario is given in Upgrading Host Operating Systems with

Parallels Virtuozzo Containers (p. 17).

Third Scenario

You have a spare server to perform a new Parallels Virtuozzo Containers 4.6 installation. In this

case, follow these steps:

1 Install Parallels Virtuozzo Containers 4.6 on the spare server. If the license that you own is

in the old license format, refer to the Upgrading License Manually section (p. 9) below for a

way to upgrade the license to the Parallels Virtuozzo Containers 4.6 format; then use it

during a fresh installation.

2 Migrate all Containers from the Hardware Node you want to upgrade to the spare server.

3 If you store the Container (called Virtual Environment in SWsoft Virtuozzo 3.5.1 Service

Pack 1) backups on the same Hardware Node, copy the backup folder to the spare server.

4 Check that all the Containers on the spare server can be started and stopped. To do this, use

Parallels Virtual Automation, Parallels Management Console, and Parallels Virtuozzo

Containers command-line utilities.

5 Reinstall the operating system on the Hardware Node.

Upgrade Scenarios