No, it's Dell R210.
The root is mounted on hdd 160gb, formatted when installing omv.
The sftp plugin works and user can log into the system but he's not chrooted and just logged directly in / and has access to / ofc.
So it wasn't working for me and I've removed it from omv.
Temporarly I'm using other omv box in the same rack but still need to fix the / permissions like gderf said.
I"ll let You know if it works.