For those interested…My network server has limited drive capacity so when I installed own-cloud 7 i wanted to us a remote storage location. On my network I have a Ubuntu database server running ver 14.04 Lts and Postgress 9.3 so this was a good location to hold my picture album, files and backups. I installed two x 2tb hard drives and used the Ubuntu / Linus NFS protocol to export the locations across my network. The first drive of 250 GB runs Ubuntu the second drive is my cloud storage and the third drive a direct copy of the cloud storage.
On owncloud I used the sftp protocol to map to the network drives. The drives now can be seen across on all PC’s across my network and Internet. I am not the world’s best on the Linux command line but I have managed to make it work.