Once my FreeNAS server was up and running, I needed to get my existing data on to it. One possibility is copying over the LAN, but since most of my data is held on ext2 Linux had drives, it made sens to me to mount these drives in the FreeNAS server, and copy using the command line.
Here is an example on how to achieve it. I have chosen to copy the contents of a 400GB IDE HD which holds my MP3 music collection into the FreeNAS file store.
