User`s guide

Parallels Virtuozzo Containers 4.6 officially supports upgrading Hardware Nodes that run

Parallels Virtuozzo Containers 4.0 and one of the following Linux distributions (both x86 and

x64 versions):

 Red Hat Enterprise Linux 4

 Red Hat Enterprise Linux 5

 CentOS 4

 CentOS 5

 SUSE Linux Enterprise Server 10 with Service Pack 1

It is recommended that you install the latest Parallels Virtuozzo Containers update on the

Hardware Node before starting the upgrade procedure. Use the vzup2date utility to check

that you have all of the available updates installed on the Node.

Preparing for the Upgrade

As with any major changes to the hard disk, it is recommended that you do the following before

starting the upgrade:

 Back up all Containers on the Hardware Node.

 Perform a full backup of the entire Hardware Node using a third-party software. For

example, you can make use of the Acronis

True Image Echo™ Enterprise Server (a free

trial version is available at http://www.acronis.com/enterprise/download/ATIESWin/)

software allowing you to quickly create an exact copy of your Node and to easily restore the

entire system if something goes wrong during the upgrade.

Upgrading from Parallels Virtuozzo

Containers 4.0