I found 4x old 750GB hard drives from 2008 which came up as ZFS when I installed them into a new ubuntu system on an old box. I installed ZFSonLinux (specifically ubuntu 14.04), samba (smb) and SSH (OpenSSH) and set to the task of re-creating the volume. Essentially, it was very painless… except for a couple of hours in there one of the power cables had come off one of the raid drives and it took a fair bit of diagnoses to get it sorted. In the end. I resilvered 1.3TB of data and set to the task of working out whether I should delete it or back it up to my new RAID… This is how I did it.