I had problems when using nfs storage to store virtuozzo backups . I don’t like to enable remote mount on startup time because network issues which could happen , and which can generate long startup delays.

so, if you mount nfs partition after node boots up, and virtuozzo already started you will not see backups in PIM or PMC.

finally received solution from parallels is:

> It should be sufficient to restart Virtuozzo Agent upon mounting NFS
>    share:
>     # vzagent_ctl restart
>
> However, for Virtuozzo 4.0 nodes it would be better to configure a
>    group of nodes using Infrastructure Manager and set a single node
>    to act as the backup node – then all information about backups will
>    be managed in a single PIM and will be common for all nodes.