How to back up the access server virtual appliance
All of the state and settings of the Access Server are stored in the directory you expanded when you originally unzipped the virtual appliance .ZIP file. This directory can be backed up by shutting down the virtual appliance and making a copy of the directory. This directory is relatively large, since it contains the entire virtual appliance distribution.
It is also possible to back up only the Access Server database files themselves, though doing so requires some knowledge of Linux: log in into the virtual appliance root shell, and back up the /usr/local/openvpn_as/etc directory.