NOTE: the setup is the video is for demonstration purposes only and not recommended.
This video goes through how expand your total storage space by adding a new virtual device to your current pool.
Jail – Install and Configure Jail on Nas4Free
Jail – Install ownCloud inside Your Jail
Nas4Free – How To Configure Your Nas4Free
Nas4Free – Enable SSL on Nas4Free and ownCloud
Nas4Free – Fix Wrong Disk ID after Import New Disk
Nas4Free – Increase Storage Space on using ZFS
Nas4Free – How to Port Forward for Remote Access
Nas4Free – Increase Storage by Replacing Disks