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.

/contrib/utils/vzdump/
File Name  ↓ File Size  ↓ Date  ↓ 
--
-2016-May-15 09:00
26.1 KiB2009-Oct-22 08:25
19.8 KiB2009-Oct-22 08:25
28.6 KiB2009-Oct-22 08:25