see how to create volumes here :- https://wiki.freenas..._FreeNAS_Volume
after re-reading your last post i think what you may want to do is use data sets or zvol to separate your data. see if this link better helps you learn about managing your storage space. :- http://doc.freenas.o...s_storage.html#
sorry never used zfs or freenas myself so have no detailed advice on best practise or how i'd set things up.
here's an extra link that i think will better help you understand the zfs filesystem freenas uses and explains how it's used. :- http://arstechnica.c...ystem-on-linux/
Edited by terry1966, 22 November 2016 - 11:26 AM.