Hi All, So the time has come when I have backed up all my data, cleaned out the /home directory, and in the morning I should expect that all of my data in Dropbox has finished synching. i have downloaded and tested the Ubuntu 18.04 LTS and burned it to DVD. In the morning I will install the 2 new 2Tb HDDs , and load the DVD to launch myself into unfamiliar territory, so when I get to the partition stage of the process I will have 1 x 1Tb HDD for the system and /home and the 2 x 2Tb drives for the RAID. What should I do about partitioning? Should I use hard partitions say, 20Gb for the /root, should I use a /boot partition or just use the MBR? Is mdadm a part of this process or does it get involved later ? ZFS for the pair of drives? I am hoping that this will go very smoothly and quickly, leaving me the rest of the day for populating the RAID disks with data. One more thing, I have found OpenSuse a really poor distro for video, in my early days (Mandrake and Mandriva) really spoiled me because the Power Pack release ensured that everything was working. But Linux has really come a long way in AV and for Suse to have issues with Codecs is just a little tired. Do I have to jump through hoops in Ubuntu to watch an MP4 or a Matroska video? May thanks Andrew Greig