vzdump is an utility to make consistent snapshots of running OpenVZ VEs. It basically creates a tar archive of the VE private area, which also includes the VE configuration files.

There are several ways to provide consistency:

Taken from proxmox.com.

Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory - [DIR] old/ 13-Nov-2009 11:28 - [   ] vzdump-1.2-4.noarch.rpm 22-Oct-2009 04:25 29K [   ] vzdump-1.2.tar.gz 22-Oct-2009 04:25 20K [   ] vzdump_1.2-4_all.deb 22-Oct-2009 04:25 26K
Apache/2.0.46 (CentOS) Server at download.openvz.org Port 80